I’ve commissioned a few Haskell-tan characters.
This one was done for $10, from a kid.
FiveRR has a bunch of artists available, and some of them are good quality. A friend of a friend is also a graduate art school trained artist, but wants a bit of money, in the 200-400 USD range.
===
Mascot design, IMO, should be done by corporate types, not primarily to represent Haskell or the community, but to appeal to future Haskellers we want to reach. A sloth or a snail is a nice symbol of laziness, but it’s not strong marketing, which should be the underlying idea of a mascot.