Most people say that you can't write on Chol Hamoed, but is it permissible to draw for pleasure as that is not considered "work"?
2I think it depends how good you are. If it's professional level, then it would be considered maaseh uman.– LoewianApr 7, 2015 at 1:04
General writing is permitted if needed for the festival. Professional writing, i.e. a scribe / calligraphy is not permitted. The same with art, I guess. If you feel like drawing a nice mural for your Sukkah (ok not this festival) and it will enhance the festival and you're not professional then probably ok.– CashCowApr 7, 2015 at 10:54
halachipedia.com/index.php?title=Chol_HaMoed shulchanaruchharav.com/halacha/… See the sources. Especially #11 in the second link from Reb Moshe Feinstein regarding fishing for fun. It's not easily allowable to do real melacha on chol hamoed unless you will derive actual benefit from it. I know many people go apple picking and don't eat the apples, but that is more of a question on them then a proof to allow all melachos.– user6591Apr 6, 2020 at 18:39
my bother called Lakewood Bais Horah (halacha hotline) and they permitted my sister whose not an artist to paint on canvass.
It is permitted for children or adults to draw amateur pictures, drawings, and paintings on Chol Hamoed as a fun activity for recreational and entertainment purposes. However, a professional picture or painting may not be done.
See there for the background and sources.
Shut Avnei Yashphe (1:110:2) quotes "Gaon Echad" [=R’ Elyashev z"l] that children who have reached the age of "Chinuch" should not be allowed to draw or color on Chol Hamoed.