Yep - I've been getting both these and the creature you pictured below. Humaworm says maybe they are eggsacks from a roundworm. Mine were almost translucent and looked like tiny yellow jellyfish with tails. In retrospect, I think maybe they were eggsacks and hatched because I also had 1/2" versions of your Mommy picture below. I also had a 4" Mommy! So...if they hatched, one assumes that they were not translucent the week before - I saw a number of those, too...like large yellow pinion nuts.