I'm just beginning to learn 3D modeling and I decided to cut my teeth on something simple, so I made a Timbie! There are many like it, and it's not perfect, but this one is mine. This model is based on the in-game model from Mechwarrior 2.

Included is the full model and a split version with a peg and slot to aid in posing, if you'd like. I'd offer a pre-supported version but you're probably more efficient with supports than I am. A word of warning, the model is fragile and care should be taken to make sure it doesn't break during stripping the supports or painting, especially with the legs.