I use a Kyser when accompanying Trad in DAGDAD.
The 'handle' of it is lengthened by a 3 in long piece of dowel rod, quite ineloquently fastened to it with duct tape.

When changing key, say, from D to F to A in the course of a set of tunes, it is much easier to take a hold of and affords a bit more leverage, when making those quick changes.

Doesn't look like much, but it does the job.

B.