American Science & Surplus
Do you like SCIENCE? (Insert maniacal laughter here.) This store is full of science supplies, electronic parts, mechanical gears, and more kitsch than you can shake a stick at for all your random cosplay needs. Expect to blow an hour here reading all the hilarious tiny descriptors near the product prices. Get a preview and order from the full catalog online at SciPlus.com, or visit the Chicago location at 5316 N. Milwaukee Avenue.
from what cosplayers tell me, this is a goldmine for them.