market, roadside (esp. BrE)
bric-a-brac, cake, charity, fish, flower (all esp. BrE)
book (usually bookstall)

have
He has a flower stall in the market.

put up (BrE), set out, set up
pack up (esp. BrE)
man, run
Who's going to man the stall at lunchtime?

sell sth
a stall selling second-hand books

holder (usually stallholder), keeper (AmE)

at a/the stall
I bought this trout at the market fish stall.

behind the stall
the man behind the stall

empty
bathroom, shower, toilet (all esp. AmE)
choir, horse
starting (esp. BrE)
The horse refused to enter the starting stalls.

clean, muck, muck out
We had to muck out stalls and groom the horses.

door