I've been FDing for a month or two now. Done a few loads. My dog is on a raw diet so some of it was his food for quick/easy travel meals and things for treats (raw chicken wings, pork ribs, thin steaks etc).
So far I've just been experimenting on other things. Various fruits and veggies and some of my homemade goat cheese with seasonings. My personal favorite fruit has been the banana slices from very, almost over ripe bananas. Don't use any that have any green, they leave a weird aftertaste. Family really likes the strawberries and raspberries. Pineapple are really good too.
I've already got too many zucchinis coming out of the greenhouse so I sprinkled them with various spice mixes and FD them. Tried from raw zucchini and roasted; my mom liked from raw but everyone else preferred the roasted.
I did a weird, random thing with pineapple and coconut cream. I put the fresh pineapple with some of the juice in a blender until almost smooth and then added coconut cream. I don't have any measurements, just kind of went for a consistency I though looked good. Put the mixture in silicon ice cube molds and froze. After FD they were very fragile but didn't fall apart. When eaten they just disintegrate and had a lovely tropical flavor. Was a fun and unique eating experience.
One really great tip I learned on a FD Facebook group was to change the default extra dry time from 2 hours to 24 hours. You do it under the customize menu before you start a load. You can't over dry something, so that extra time helps in case something happens and you can't get around to unloading the machine. Then you don't have to worry about rewarming the trays if they aren't done.