Check out your local tobacco shops that also sell questionable items or a straight up head shop. There is a brand of flavoring called Tasty Puff that is sold to be applied to rolled "cigarettes" or "cigars" that has received excellent
reviews for DIY purposes. They have all kinds of different fruit flavors, chocolate, vanilla, etc. and other random flavors. They sell them in my town at several tobacco shops. It's worth a shot. I actually plan on going to one of the shops that I know stocks them and snagging a few to try out. I was short on time the last time I was in there looking at their juice (they also sell Hot Vapes juice, YES!, high quality American made
eliquid sold in my local tobacco shops, i'm a lucky dude!

). Hot Vapes is the husband and wife team that sells the Bombshell Stinger, FYI for those that have never heard of them and they make some great juice, I would highly suggest everybody try their Whisk Licker (cake batter) at least once! OMG GOOD!
I hope my post isn't breaking any rules, i'm not trying to do so, just trying to help the OP out but I can't really be much more subtle then I was or he may never find any.