Tiny two-way heads (about 4cm on a side) designed for tabletop tripods. Not super-deluxe, but these are vintage heads made mostly of chromed metal, and they should hold cameras up to the size of a small mirrorless camera. 1/4" thread on top for camera mounting, 1/4" thread below for leg mounting. Various styles.

Image is for illustration purposes only. Actual item may vary.