I hesitate to suggest this, but if you have a dog, the yolks are good for its coat. So if you still have some left over after following one of these recommendations, that's an option.
Bake, cut in half, scoop out flesh. Mix with yolks, cream, butter, cheese and garlic. Refill shells. Bake again. Sprinkle with more cheese and broil til golden.
Lots of yummy, homemade mayonnaise for dipping pomme frites! Infuse with herbs, or make aiole and spread on butterflied shrimp and grill (a local treat my family in Maui likes to prepare). Have fun!