I'm told that if you pull out the carb-heat and bring the throttle back a bit, you can balance the saucer between them. Best place for the spoon is wedged in the slot where the trimmer sticks out.
On the AA-5 you can hang a half-full cup from the flap lever without spilling too much, as long as you make all your turns to the left.
Oh for a trolly-dolly.