If you have a construction or mechanics room in your school, there may be polycarbonate scraps. At my school the younger grades make a piggy bank with a polycarbonate side. Chances are, if you ask the professor he'll let you take the scrap pieces. Schools can be a great place to find scrap bits, but make you you ask politely, or otherwise you'll ruin your chances.
Construction labs can also carry some wood that you need in your next homemade. The vast majority of rooms have a wood scrap bin. Like with the polycarb, just ask the teacher and they may say yes.
Other than that, materials can be anywhere! I once found a piece of sheet metal on the ground and the teacher let me keep it. You just have to keep your eyes out and know where to look, and when to ask.
2.Thrift stores/ Garage sales
People sell and donate random things, you may get lucky and find springs or pvc.
3. Hardware stores
Look out for sales and discounts. Also, sometimes there may be a scrap bin for wood or tubing.
Spare library cards or any useless card can also be used as a substitute for polycarb (but that's only if you have nothing else).
This was just a post on saying that materials can be found anywhere and you just gotta know where to look. Also this new noob is trying to be useful at NerfHaven😉.
P.S if the moderators feel like this is absolutely useless, feel free to delete this topic.
Edit: Now that I think about it, this may not belong in the homemade section. Moderators please move this if you don't' think it belongs here. Sorry.
Edited by Bubba Longshot, 12 April 2017 - 09:27 PM.