although the word "adult toys" is immediately related to sexual issues. It can also cover other aspects or categories.

ehem

Remote control carts: I have seen adults with players, and they are highly expensive toys you can almost buy a motorcycle 🛵 with the same thing to use to pay a remote control car.

Boats and remote control aircraft: also another category that is not economical and has enough fans worldwide.

Action figures: There are collectors or simple compulsive accumulators with these themes as well.

Letters of "Magic" or "Pokémon" among others: another category that moves a lot of money and many people.

I think they could be some examples.