I would love to find a Bill Watterson one, if anyone knows.

Here you go, I’ll throw in some bonus ones as they’re all linked together in the Bloom County sidebar:

• !calvinandhobbes@lemmy.world
• !bloomcounty@lemm.ee
• !cyanideandhappiness@lemm.ee
• !garfield@lemmy.world

Lighthearted eye candy

• !tenforward@lemmy.world
• !outofcontextcomics@lemmy.world
• !witchymemes@lemmy.world
• !artshare@lemmy.world
• !bertstrips@lemm.ee

Most of them (besides weechat-android and quasseldroid which use bouncers/relays) seem to have fallen out of maintenance; Goguma appears to be currently maintained and updated as a pure standalone client and would be what I’d recommend trying first.