Boardgames and to a lesser extend tabletop rpgs is something I've wanted for a long time. I set up my sims for roleplaying sessions before, but without a dice rolling animation it's just not the real thing.
They could make one dice rolling animation and tie it to a dice shaker (leather, tin and plastic swatches). Place the shaker on a table and sims will start a normal dice rolling game. But if the shaker is put on a board instead, the sims will play that game. The animation would be the same as the standard one, but with the occasional swiping movement (for moving pieces) and scribbling with a pen strewn (for marking points or hitpoints) in.
Board swatches might include Monopoly, Risk and a generic dangeon floorplan for D&D. New clutter in the pack would include dice, character sheets, pencils and pens and miniatures.