Back up rhythm devices
General mountain dulcimer or music discussions
I use two different foot rhythm devices- both are 'low tech' though:
I made an ankle percussion strap that closes with Velcro. I sewed various rattling/jangling things on it. When I tap my foot with my heel, it works well but obviously does not sound like a drum, more like rattles. But when combined with the stomp of a hard heel on my shoe, it works nicely. This doesn't work as well if you are a toe-tapper rather than a heel tapper.
Same thing with putting a tambourine under my foot- I put the tambo on the floor with the skin side down. Then I put my toe into it and that lets my heel rest on the rim edge that's nearest me. I then tap my heel down on the tambo rim and that creates the rhythm. There's a percussive quality if you use your heel assertively.

Thank you so very much for sharing this.