@urlyman for me:

House: never new, but I don't have one now.

At 18 my mom bought a secondhand car from her cousin, said I had to pay for it. I drove it once and gave it to my brother.

Parents bought me two or three new bikes, but the one I could ride as an adult got stolen. Bought a new one and gave it away after moving. It's been secondhand since (and giving away).

1 secondhand laptop. Bought a new computer in 2006 though.

New mobile phone in 2006 (big year). 2 secondhand since.