I've seen disco ball helmets before, but they didn't satisfy the perfectionist in me. No haphazardly glued plastic mirror pieces here, this is the real deal. If you would like to make a proper disco ball helmet, read on.
• Note: This disco ball helmet uses real glass, as it is intended as a costume piece (to be paired with a disco backpack, coming soon!). If you want it to be functional, acrylic mirror would be safer and lighter weight (though not as shiny and reflective).
Step 1: Supplies
Mirror tiles: I used mirror tiles that come backed with fabric. This makes the whole process MUCH faster. You can purchase it from Kit Kraft. I had quite a bit left over, I probably used one half to two thirds of it. They also sell mirror tile by the row, but it's still more cost effective to buy the sheet.
Contact cement: I just barely made it through with one bottle. I would recommend getting two.
Helmet: I spent a lot of time choosing what kind of helmet I wanted. I settled on this vintage Bell motorcycle style because of it's spherical shape and clean lines. Real bell helmets of this style are quite expensive, but you can find cheap knock offs on ebay. Search for "vintage open face motorcycle helmet" to find a helmet similar to the one used here.
Glass cutter (not pictured): For cutting the tiles to shape along the edges of the helmet. Easy to get at a hardware store.
Metal Saw (not pictured): Most of the vintage style helmets have snaps for a visor which need to be removed. There may be another way to remove them, but I happened to have a jeweler's saw handy which did the trick.