There are a lot of creative people here at the WKC forums. Curious to see things that you use quite a bit when grilling or smoking that people might not normally think of.
I'll start it off with something that has saved my butt quite a few times.
For me rechargeable batteries and a battery charger are a must have. I have two Maverick thermos and it seems like if one is dead, then the back up is dead too. I love having my battery charger so I don't have to run out for batteries at the minute. I have a few extra batteries on standby most of the time, and even if I don't it only take 20-30 minutes to charge enough to get through a long smoke. Usually that 20-30 minutes is lighting the grill and getting it up to temp so there really is not time wasted while the batteries are getting a quick partial charge.
I've got something like this:
Another one is a 25 pack of shop towels. Saves me from going through a ton of paper towels. Just keep the used ones in a plastic bag until there are almost no cleans ones left and toss them in the washing machine.
Shop Towels