I'm thinking it needs to be a pose that you don't mind seeing him hold for more than a few moments.
Not sure how well any of these might work:
- arms crossed
- hands in pockets
- lighting a pipe
- holding on to the handle of a shovel. Maybe a foot propped up on the shovel.
- if not leaning on tender, he could be standing and have one hand about shoulder height on the edge of the cab
I like your suggestions Bruce. I'll see what I can come up with while I'm working on Claus Sprekles. I'm leaning towards a hand stretched out supporting himself on the cab look with maybe one hand on his hip pocket.