These aren't anything too dramatic, but they sound really good. I'm archiving them here, and I fully intend to try them before the summer is over.
2 egg yolks
1 Tbsp lemon juice
1 tsp minced garlic
¼ tsp sugar
½ tsp salt
2 Tbsp chipotle peppers in adobo sauce
¾ cup olive oil
Place everything except oil in food processor, pulse until combined. Slowly pour in oil and process for about a minute. Refrigerate until used, or serve immediately.
A simpler "campfire sauce" can be made by combining equal parts mayonaise and BBQ sauce with a little bit of liquid smoke.