What’s a Pokémon (or Pokémon spin off’) you wish had more merchandise available?

I’m someone who really loves the less popular things in terms of video games. The downside of this is that means it’s not going to have very much official merchandise.

Pokémon Mystery Dungeon is an example. A sort of less discussed spin off that I grew up with. We only have about 4 or 5 official Pokémon mystery dungeon items available in the store.