I forgot Statue Mario
Anyway I've been requested to not upload large amounts of palette flashes, so that will bump down the 271 combinations to 24 to be uploaded.
Every possible (as in, feasible to actually witness in gameplay) invincibility flash combination in SMB3.
You'll notice some sections are blank; either those palette combinations only occur before the power-up is available, or the power-up cannot reach the area where the palette combination is...
Update: There are three sizes of Thwomp in SMG, and an additional larger size added for SMG2. The "Big Thwomp" from the Supermassive Galaxy is a separate object from all of the aforementioned ones, which can be told easiest by the fact that its inward-pointing triangles around its rim are filled...
Not with absolute I-have-verified-in-the-data-100% certainty, but from what I can tell they undoubtably share a model, just with edited parameters (and I'm not quite sure yet which is the "normal" size used elsewhere, if either). Several other trap-type things in the game (boulders, rolling...