This one was pretty much a no brainer, it doesn't get much more bitter than lemons. One big slice on the 1 and the pips are all little lemons.

Available in raw resin $10 and painted $20 (last picture is an example of a random unpainted dice)

All my dice are made from solid 3d printed resin. The painted versions are sprayed with 3 layers of clear coat so they are usable but I would suggest rolling them on a soft surface to avoid chipping or wear and tear on the paint job.