Carry Case

What are the best mechanical properties for a carry case?

I am to design a carry case for electrical equipment using CES edupack 2011. I am to Select materials and process methods to make a light travel case for electrical equipment (two models – cheap; and up-market, high quality, minimum weight ones).

So far, I think what is important is;
Hardness,
Compressive strength,
poor conductor,
good insulator,
materials that can be shaped using casting or moulding.
and then arranged by price/density.

I am getting stupid things such as glass. So maybe add tensile strength. I am only getting ceramics as choices, I know cases would probably be made out of tough plastics or metals. What properties am I missing?

Cost, weight, ease of shaping/manufacture.

Note that it is weight of a case rather than density of material.

Big Wilson Carry Case from Chuggington Fits 17 diecast trains Disney Learning Curve

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Fintie (Black) Folio Book Style Carry Case For Amazon Kindle Paperwhite with Auto Sleep/Wake Feature 8 Colors Options $5.99 …

Black Built-in Bluetooth Keyboard Leather Housing Carry Case Cover For Apple iPad2 iPad 2 2nd $13.50 Please kindly notice before purchase:Order will be shipped via prior registered airmail(7-11 days delivery time when parcel shipped out in 17-28 days indicated by amazon system),Tracking number is available. We save shipping postage for buyer from this.Thanks for your understanding. This iPad 2 leather case comes with a built-in bluetooth keyboard that seamlessly connects with the iPad 2 for a qui…

Fintie (Navy) Folio Book Style Carry Case For Amazon Kindle Paperwhite with Auto Sleep/Wake Feature 8 Colors Options $6.99 …

Vera Bradley Carry It All Wristlet $38.00 Use the adjustable wrist strap to carry as a handbag or a wristlet, or attach it to the handle of a larger bag…

Link Depot LD-MCHOLDER Memory Card Carrying Case – Black $2.71 Memory cards are so compact that unfortunately they can be easily lost or damaged. This anti-static memory card case keeps all your memory cards safely stored so you always know where they are. You won’t be digging in the dusty bottom of your camera case or briefcase looking for your valuable memory cards anymore. Memory cards not included….

Brother Hard Carrying Case $41.66 Brother Hard Carrying Case

Everki EKB424 Carrying Case (Briefcase) for 16 Notebook – Black $54.99 Everki EKB424 Carrying Case (Briefcase) for 16″ Notebook – Black

Everki EKP119 Carrying Case (Backpack) for 16 Notebook – Black $104.22 Everki EKP119 Carrying Case (Backpack) for 16″ Notebook – Black

Everki EKB407NCH Carrying Case (Briefcase) for 16 Notebook – Charcoa $36.99 Everki EKB407NCH Carrying Case (Briefcase) for 16″ Notebook – Charcoal

Power A Carrying Case $42.58 Power A Carrying Case

Everki Beacon EKP117NBKCT Carrying Case (Backpack) for 18 Notebook - $118.49 Everki Beacon EKP117NBKCT Carrying Case (Backpack) for 18″ Notebook – Black

Everki Swift Light EKP116NBK Carrying Case (Backpack) for 17 Noteboo $45.99 Everki Swift Light EKP116NBK Carrying Case (Backpack) for 17″ Notebook – Black

Everki Advance EKB407NCH18 Carrying Case (Briefcase) for 18.4 Notebo $53.49 Everki Advance EKB407NCH18 Carrying Case (Briefcase) for 18.4″ Notebook – Charcoal

Everki EKB417BK18 Carrying Case (Briefcase) for 18.4 Notebook – Blac $138.49 Everki EKB417BK18 Carrying Case (Briefcase) for 18.4″ Notebook – Black

HP Carrying Case for Netbook $54.5 HP Carrying Case for Netbook

Wilson Carrying Case for Golf $125.99 Wilson Carrying Case for Golf

Wilson Carrying Case for Golf $125.99 Wilson Carrying Case for Golf

Wilson Carrying Case for Golf $149.99 Wilson Carrying Case for Golf

Wilson Carrying Case for Golf $125.99 Wilson Carrying Case for Golf

Wilson Carrying Case for Golf $149.99 Wilson Carrying Case for Golf

Kensington Sky Runner Contour Carrying Case $76.99 Kensington Sky Runner Contour Carrying Case

Ogio NEWT II MONO Carrying Case (Backpack) for 15 Notebook – Black $84.99 Ogio NEWT II MONO Carrying Case (Backpack) for 15″ Notebook – Black

HP Carrying Case for Tablet $64.99 HP Carrying Case for Tablet

Wilson Carrying Case for Golf $149.99 Wilson Carrying Case for Golf

Epson Carrying Case for Projector $39 Epson Carrying Case for Projector

Wilson Carrying Case for Golf $149.99 Wilson Carrying Case for Golf

Wilson Carrying Case for Golf $149.99 Wilson Carrying Case for Golf

Wilson Carrying Case for Golf $125.99 Wilson Carrying Case for Golf

Wilson Carrying Case for Golf $125.99 Wilson Carrying Case for Golf

Everki Titan EKP120 Carrying Case (Backpack) for 18.4 Notebook – Black $184.49 Everki Titan EKP120 Carrying Case (Backpack) for 18.4″ Notebook – Black

Samsonite Xenon 2 Carrying Case for 15.6 Notebook $62.99 Samsonite Xenon 2 Carrying Case for 15.6″ Notebook

Altra Cushioned 12.5 Laptop Carrying Case $36.99 This sleek, lightweight carrying case protects your laptop and your lap. This case can be used as a computer desk and also keeps your lap from overheating, fits most laptops up to 12.5″ wide and has an easy-grip handle.

Pentax Carrying Case (Pouch) for Camera $21.2 Pentax Carrying Case (Pouch) for Camera

PC Treasures SlipIt! 07627 Carrying Case for 17 Notebook – Titanium $26.79 PC Treasures SlipIt! 07627 Carrying Case for 17″ Notebook – Titanium

PC Treasures SlipIt! 07626 Carrying Case for 17 Notebook – Purple $21.18 PC Treasures SlipIt! 07626 Carrying Case for 17″ Notebook – Purple

PC Treasures SlipIt! 07638 Carrying Case for 15 Notebook – Pink $21.99 PC Treasures SlipIt! 07638 Carrying Case for 15″ Notebook – Pink

Power A CPFA075244-01 Carrying Case for Portable Gaming Console $19.21 Power A CPFA075244-01 Carrying Case for Portable Gaming Console

Codi Carrying Case for Notebook $53.99 Codi Carrying Case for Notebook

Franklin Carrying Case for Bat – Navy $28.49 Franklin Carrying Case for Bat – Navy

Franklin Carrying Case for Bat – Black $28.49 Franklin Carrying Case for Bat – Black

Griffin AirStrap GB01759 Carrying Case for iPad – Black $26.4 Griffin AirStrap GB01759 Carrying Case for iPad – Black

PC Treasures SlipIt! 07630 Carrying Case for 17 Notebook – Pink $22 PC Treasures SlipIt! 07630 Carrying Case for 17″ Notebook – Pink

Case Logic VNCI-217 Carrying Case (Briefcase) for 17.3 Notebook – Bl $32.49 Case Logic VNCI-217 Carrying Case (Briefcase) for 17.3″ Notebook – Black

Manhattan Empire II 421577 Carrying Case (Briefcase) for 15.6 Notebo $27.55 MANHATTAN Empire II 421577 Carrying Case for 15.6″ Notebook – Black

MANHATTAN Empire 421560 Carrying Case for 17 Notebook – Black $21.49 MANHATTAN Empire 421560 Carrying Case for 17″ Notebook – Black