Doodads
Doodads are the small destructible props scattered through the levels; torches, candles, pots and coral. The game's code has no collective name for them (each is its own object: Torch, Bottle, catacombThings, Clam, coralSpike, limboDebris); doodads is the established community term. Stomping one bounces the player and recharges the Gunboots without ending the current combo. They drop a few gems when broken.
Doodads are usually drawn in the scenery colour (white in the default palette); the candles of the Catacombs and the underwater props of the Aquifer are the exceptions. In Limbo, floating doodads are the only things to bounce on.
In Boulder Style, walking into one breaks it.
Gallery
Every doodad appearance in the game, in its unbroken state. Where an object picks a random frame (the catacomb props, coral, and all the limbo debris), each variant is shown.
The full frame data for each of these sprites can be explored in the texture atlas.