Its a great gift idea or a decoration for your house.
Learn the step-by-step method by watching the video tutorial below.
Get a file and file down the rough edge from the openings.

Image credits: Farmer Brown’s Paradise via Youtube
Next, gently push with your hands the bottom half of the can.
Use a hammer to help push down the can if it gets harder to push.
(Work the front side first and then flip over and hammer the back.)

When youre done attaching the tassel, hammer down the bottom to close it.
Repeat this process to the rest of the tin cans you have.
After picking the bit, drill a hole on both sides of the can.

Use a file to smooth down both the inside and the outside of the hole.