I have a home made "boom fiddle", possibly
something like your Teufelsgeige ??
It is a broom stick mounted with a tambourine
(for banging with a drumstick), wood block,
cowbell, bike horn, and a small cymbal on top.
The whole thing bounces on a spring. This is
a versatile rhythm instrument, but Juilliard
refuses to recognize it, so it qualifies as
Folk. Takes years to master the intricacies.
JOHNNY in OKC