Cleanup and salvage som old circuit board from copper and aluminium

Helping an acquaintance to clean up his place and i am getting alot of trash-goodies as thanks. But my place gets a bit messy real quick so i have to clean it up a bit. Not much to keep in some electronics but it's quite fun to pick them apart, and i do get some worth to keep. As usual, my camera lens has a crack on it so it shows some ghostly flares in some angles. And i'm still saving up for a new furnace.