Almost every laptop bought these days has an express card slot. unfortunately, this slot usually goes unused. If you laptop comes with a "dummy card" in the express card slot, you can use it to stash emergency money. Most dell laptops come with a plastic "dummy card" in the slot, which is perfect for the following instructable. I used a dell inspiron 6000/e1505 as my laptop.
Step 1: Fold the Money
Firstly, fold your money into a square/rectangle that will fit under your card. compare the folded bill to the space under it. the following fold should be fine for most cards. if not, fold your bill a different way and modify the next step accordingly.
for my dell dummy express card, i had to fold my Canadians 20$ in half 3 times. check in the pictures.
Step 2: Create the Envelope
once you have your bill folded and compared to your card, we need to make the envelope to hold it securely under the card. for this step, draw the attached template onto a sheet of paper, changing the lengths according to your folded bill. in my case, the rectangles of my template were 3.9 cm by 4.3 cm.
Step 3: Fold the Paper
Fold the paper into a rectangle. fold the two big rectangles together, then use the two smaller ones to close the edges. you should have an envelope, open on one side. both folds should be on the same side of the envelope, this will reduce the chances of the tape falling off in your computer (you will see in the next step).
Step 4: Install the Envelope
put paper bill into the envelope to see if it fits. Tape the envelope under the card, the side without the tape facing out. By taping the envelope onto the card this way, you eliminate the chances of the envelope falling apart. the final step is to slide the card into your computer, and voila!
I use this as a hold for emergency money incase i run out of cash at school. most people keep money someone in their cars, but since i don't own a car i keep my money in my laptop. also, you don't have to worry about losing the money, because no one will ever know that there is money in there unless you told someone.