TL: DR version: you can use Smash Hits stickers for pretty much anything.
Can't afford Impulse body spray? Simply rub Crayola Magic Scent crayons under your arms.
Not the 'dirt' one though, obviously.
Wikipedia/ Creative Commons / Via commons.wikimedia.org
Save money on Pogs by writing 'Pog' on the cardboard circles from the bottom of Party Poppers.
Or draw a shark. Or a skull. Or a weird tasmanian devil-like thing.
Via youtube.com
Convince your friends that you're a supercool raver by sticking strips of coloured tin foil to your trousers.
You can also add in a few of your Pog designs if you're feeling particularly creative.
Wikipedia/ Creative Commons / Via en.wikipedia.org
Make your own night vision goggles by taping a Game Boy Light and magnifying screen to your face.
This is particularly useful if you're trapped in a broken down car next to a T-Rex.
CGRundertow / Via youtube.com