I watch Play With Junk on YT and I'm very jealous of his "dumpster finds". We're both in Switzerland, but I don't know of any such miraculous dumpsters in my area.
I keep looking at Ricardo and Tutti but there isn't all that much and it's usually very expensive for things that are in unknown condition/not working without repairs.
So, Swiss people: how to find the good dumpsters full of scopes, working computers, and other equipment? Can you show up at a "recycling" center and take or buy their trash?