Not only is this is awesome gift but super fun to make yourself. I do recommend buying some sauce bottles that you can find from a number of online vendors. It just makes using them so much easier. If you're a habitual hot sauce user then just start saving those bottles!
I'm going to link to a site online for a recipe HERE
If I gave you my ACTUAL hot sauce recipe I'd have to break your knees but as you can see it's not super difficult and these will be sure to impress your fans. Who doesn't love hot sauce??
While buying your bottles you may also find shrink wrap neck wraps. These seal the cap like you would buy in a store and are easy to use with a heat gun or normal hair dryer. It'll just give it that special touch.