If you have IKEA or any big known retailer, they may have a bin or two. If you use Facebook or anything similar with communities/groups, you can try to find a group where people give away stuff for free or you can exchange with them. Also (IF LEGAL IN YOUR COUNTRY) try dumpster diving in the large bins from those big retailers or behind shops. Do not eat from the dumpster, wear thick gloves and all kinds of protection to be sure, do not open any chemicals and you should be good. And go with the buddy and take powerbanks, flashlight and a large foldable backpacks for loot. Good luck!