Wave simulators used to be a whole lot more popular a couple of decades ago. You can still find them in good condition on eBay. The AQUAMOTION RAVE WAVE II Wave Simulator is a battery powered wave machine that puts on a calming show as you let it rock back and forth. It has motion and sound controls on the base.
AQUAMOTION RAVE WAVE II Wave Simulator Machine Tested 🌊 Gadgetify
This wave machine is very similar to the Wave F/X unit but doesn’t have tiny dolphins. Ours is not perfect but still works. You can find wave machines like this on eBay.
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