I had this toy when I was around 12 (mid-90s). We got it from a kiosk at the mall around the holidays. It clipped to a table & had two yellow pendulums that you filled with sand or pennies that swung back & forth. There was a hard surface on the table where you'd put a piece of paper & clipped a marker in & it would draw circles, spirals, etc... depending on which way you swung the pendulums. It was all plastic. It was some type of harmonograph but I don't know the name of it.
