Rookidoo Merch or DIY craft

Hi! My husband loves Rookidoo and I want to give him some cute stuff with Rookidoo for his birthday.

But I can't find very much ... 🙈 Just one plushie (not available in Germany) or cards. Is there something more? A cool shirt motive or a cute cup or something like this?

Or has someone a good inspiration for a DIY project? (I'm bad at sewing, but paper crafts or painting works.)