craftgrrl | messenger laptop bag/new holiday!

just a quick q, if you were considering crafting a messenger bag to hold a laptop, i know you'd probably use some sort of thick material and probably use something to reinforce the bag between the lining and the outer fabric...

i was thinking of something soft, like felt for the lining and possibly cardboard (?) for the reinforcement and i wasn't sure what i could use for the outside fabric...i know you could use leather, but i think that would be expensive...is that wrong? maybe something quilted...

i think the material for the bag isn't so important as the strap...probably. what could i use for that?

i'll for sure post pictures if i make one.
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And PS...if any of you are dating, here's a new holiday to celebrate, HA!

http://www.steakandbjday.com/

what's funny about this, is my boyfriend and i's anniversary (two years!) is on the 13th. so i'll definitely have to hit up the meat department. sorry if this offends anyone, but i think it's funny and silly.