I had no idea your birthday was Sunday. Happy Birthday!
I heard you need fakemon ideas. Here's one that Harry might like, a sandcastle fakemon! One of its types is ground but it could be a hermit crab (Water/Ground) some sort of bug (Bug/Ground) or whatever you can think of. Also, what about a Stantler prevo?
If you fancy any other ideas, just ask me. I'm made of them.