dodelheimer, n. — Green’s Dictionary of Slang

dodelheimer n.

also dodenheimer

[? dodad n. + ‘German’ sfx -enheimer]

any nameless small object, typically some form of gadget.

1931		L. Pound ‘American Indefinite Names’ in AS VI:3 258: Indefinite names [...] dudelheimer [...] dodelheimer.
1942		Berrey & Van den Bark Amer. Thes. Sl.