Scavenger hunt riddles for adults?

Hi guys!
My husband’s birthday is in a few weeks and I’m getting him a bunch of small presents. What I’m planning on doing is giving him 1 card to start that has a riddle inside, then that will lead to 1 present with another riddle, which will lead to another present with another riddle, and so on.

What are some good riddle ideas for objects like an oven, fridge, truck, trampoline, the roof, or any other household/yard object?

The riddles can rhyme or not rhyme, can be romantic or basic, and should be just a little bit challenging to figure out.

I’m looking for about 10 riddles overall.

Thanks!