Use styrofoam tree cones (you can wrap in plastic wrap to keep food safe) and toothpicks to great a fun and yummy donut hole tree! Source
Doughnuts are amazing on their own... but why not indulge your guests with a doughnut dunking station! Source
Create a dowel/board donut display! You could also use a paper towel holder if you worried to take on a DIY project. Source
Serve up even store bought doughnut holes in pretty wrappings. Not only will they look great, but they'll be super easy for your guests to grab and munch on! Source and recipe