Bikes (lots). 2 roofracks, a chair (needs to go), bike tools, Zwift setup, 2 jet washers, a 'portable
ebay special' jet wash for the bikes, a 25l drum of snow foam, spare bike wheels, 4 car wheels (loft space), sons car tools, my car tools, camping crap.
Son's recent purchase of a large roof box has taken up a considerable amount of wall space - Grrrr
On the positive side, a large exercise bike has been 'removed' and put back at MIL's house - we were 'told' to take it 10 years ago - been used about twice. It was a big chunky one with 4" tubular legs that I tripped over all the time.