so when your neighbour steals your precious one and only capo, or your cat fight with it, or maybe your grandma throw your capo away, no worry, you can always find other alternative to capo. in my case, my friend accidentally broke my precious red adorable capo because she was too busy someone else's tray of freaking eggs. (who she barely knows).
i found this video on Youtube which is undeniably useful. GOD BLESS THE INTERNET!!!!!
you'll be needing a guitar (of course), a pencil and rubber bands. it is freakingly simple, and if you can't get the thing right, you better be off to Mars. secure it tightly or it will sound like crap.
but don't be so cheap, buy a capo.