When I worked at various studios I occasionally would do fun drawings of and for coworkers, and if their kids and family stopped by the studio I'd do some drawings for them to color as well. So I thought why not take it step further and do a few proper coloring books.
Here is a link if you want to check them out:
https://www.amazon.com/stores/Twin-Pine-Productions/author/B0DSPWDK2B?ref=sr_ntt_srch_lnk_3&qid=1758520906&sr=1-3&isDramIntegrated=true&shoppingPortalEnabled=true