I made this in about 30 minutes just to get the idea out there. It needs a lot of finishing work, I went pretty fast and sloppy, but if people think its a good idea, I'll try to work out the kinks and make a high-quality version.
I decided sometimes, wallets are too bulky, and I always need to use pens, but i get stabbed when I put them in my pants pockets. (I don't use chest pockets or pocket protectors.... not my style)
All you need is duct tape, a couple rubber bands, velcro, and a knife.
When you're done, you'll have a place to discreetly place your money and your pens. The sleeve can easily be hidden under the sleeve of a jacket.
Anyways, lets start... If any of my instructions seem vague, I highly suggest you look at the picture steps, they're way more clear.
I'm open to any suggestions.
Step 1: Materials
-some sort of blade