For my ocean sensory bin I really wanted Orbeez since can stay wet (and cool) without getting funky, but I discovered that Orbeez have been banned (and for good reason). Instead, I got some blue plastic pebbles and beach kinetic sand – I added some animals from the Terra Sea Life set I got from Target many years ago and some sand castle-themed kinetic sand tools I got years ago (very similar to the ones in this set).