I have a small Master Forge propane smoker with a rather small smoker box for wood chips. I have been pleasantly surprised by the quality of food I've been able to make in this relatively cheap smoker and I hope to one day upgrade to something a little larger, but for the time being, this is what I have. I'm wondering if you know of any alternatives to regular wood chips that might last a little longer and prevent me from having to change the wood out every 30 minutes. I like the flavor that I get from the wood chips (I usually use Apple Wood), but when I smoke something for 8+ hours it becomes rather tedious to change the chips so often in order to keep it smoking. I would love to find a solution that would provide smoke for a couple hours ideally, but even an hour would be an improvement. Any suggestions would be appreciated!