Junk to useful:
Plastic barrels: Take a vertical slice off of one side, leaving an opening about 16" Adjust as needed. Good bad weather generator cover. Would also make a good barbecue cover.
Plastic pails: I scrounge them by the thousand, wash them put 12 1" holes in the sides as use them for nursery pots.
Carpet: Lay upside down in the garden for mud free paths. Roll up and store dry overwinter will double their life.
Wood scraps: We have a company in industrial centre that collects all the 2x4 and 2x6 off cuts from several truss companies, a millwork company, and three mobile home/camp unit makers. They chip and shred them and sell it as horse bedding.
Pallets: Lean against each other in pairs, and tie one edge with baling twine. Instant snow fence. Assemble 9 as and extended E or 8 in a swastica and you have a 4 bin composter.
Sawdust, wood chips. Wood pellet heating.