not like alive ocean sponges but just regular old sponges for cleaning and such. i have a huge love for them and i actually will go out shopping just in hopes of finding a type of sponge i don't have already. i don't really collect smaller sponges like for dishes, usually larger ones like car sponges or grout sponges. i especially love grout sponges. i have almost 40 sponges currently. i have specific sponges that i hope to get someday, like a grid-cut car sponge, a set from this brand called brick & bone, a big oval sponge from a brand called armaly, a clamshell sponge, an ardex sponge. i would really like to have an epoxy sponge someday. my sponges make me happy. something about the feeling of them in my hands is just very pleasing. i sometimes put a little bit of hand soap in a bowl with some water and squeeze it through my sponges over and over again. i've never met anyone else that really cares about sponges at all, so i guess that makes it niche. i'm just a sponge loving girl!