Watch the video for the overview:
Step 1: Supplies
1. 35mm canister
They will give you these for free at Walgreens or most one hour film development labs.
The white ones with the tighter lids work better than the black ones.
2. Can of compressed air
Your common air duster - found at most offices. Used for blowing the dust out of computers and keybaords.
3. Some confetti
I bought some for a dollar to make it stand out more in the video, but those holes from the hole punch work great!