Prop making on a budget

Hello, if anyone knows any good websites for supplies which can be bought extremely cheap, list them here.

i.e. eBay, Etsy,

another one I have heard of that I have not bought from yet is Specialty Bottle - Glass Bottles, Glass Jars, Tin Containers, Vials, Plastic Bottles, Plastic Jars , but from what I've researched, I don't think it is a scam.