Today I found 2 of these in my bathroom. One was on the counter and the other was in a sink. I got a better look at the one on the counter. It almost looked like a tiny snail. I put a clear lid over it, but didn't get a picture as my cat knocked it on the floor. Inside the lid, it kind of looked like a slimy, ameba type thing. Something was in the middle, but my magnifying glass wasn't strong enough to see details.
I took pictures of the one in the sink, but they're not very clear. My camera needs a battery, so I took pictures with my phone. If you have any idea of what these are, please let me know. I had seen some a few months ago, but didn't think about asking.
If I see another one before I get a battery, I'll try to borrow a camera to take better pictures. Thanks for any help you give.