Tree Lobsters
Back in 2008, I started
Tree Lobsters as a joke. It's still running, though less frequently than the twice-weekly rate at its peak.
The general idea behind it is a pair of lobsters, sitting in a tree, discussing stuff. Almost all of the comics use the same image for all four panels. This is mainly due to the fact that I can't draw. Yeah, I know. You'd think that'd be some sort of prerequisite for making a webcomic. Turns out, not so much.
Tree Lobsters gave me a lot of experience writing short-form fiction, which later came in handy. Cramming an entire story into four panels really forces you to get your point across as clearly and concisely as possible.