So your crock is on a small cart so you can move around during the party?
I'm a big fan of smoked paprika, and use it in a few crock pot dishes. It gets me smokiness in my chili without the heat from using chipotles, so the family is still able to eat it.
One of my favorite crock pot dishes is red cooked chicken. You mix equal parts of soy sauce, Chinese cooking wine, and water or broth. Add some sliced ginger, green onions, and some star anise. I like to throw in some Szechuan peppercorns too. You can boil all of that for a few minutes and strain it, or just throw it all into the slow cooker. Make sure it's enough to cover the chicken, then cook it on low until it's done. Serve it with some of the sauce and some minced green onion for dipping.
Take the remaining sauce and boil it for a few minutes, then chill it and freeze it. Use the sauce over and over again, it picks up flavor and gets more complex the more you use it. You can freshen it now and then with more herbs/spices, and you'll have to top it up periodically with more soy/water/cooking wine.
You can also do this on the stovetop - bring the liquid to a boil, add the chicken, return to boiling. Boil 10 minutes, then cover and remove from heat. Let it sit in the liquid another 15 minutes and it's ready to serve. Delicious.