Looking for sand toy/disk!
I'm not sure if I've posted this to the right forum, but hope someone can help. YEARS ago we had an item that was one of those "toys" you couldn't leave alone. It was an oval or rectangle plexiglas flat disk about 3/8" thick that was filled with grey, blue, & white colored man-made sand and some kind of clear liquid. As you flipped the disk over the sand would slowly seep thru the liquid making what looked like the bottom of the ocean. For some reason, it was fascinating to watch--each time you flipped it, the sand would flow thru differently. I'm trying to find another such type item, but can't even remember what it's called, nor where to find one. Any idea?