I have dehydrated lots of stuff, including strawberries. I dont know if its just cause I'm in Florida, but the humidity gets to them in a matter of minutes and they dont stay crisp, no matter how long you dehydrate.
I have done a lot with fruit and vegetable powders. Dehydrate fruit and then grind it in a coffee grinder. I did this with strawberries. You have to take then right out of the dehydrator and put them right into grinder. After a while the powder cakes up. I looked into the anti-caking agent they use for spices, etc.. but never did anything further with it.
The strawberry powder was great. I would show it to people and no one ever guessed what it was, even after smelling it. It is because they are not used to seeing strawberries in powder form. It messed with their mind.
In the Culinary Olympics in Berlin in 96 I did a buffet platter and and used apples that I dehydrated in the shape of barquette moulds. I partially dehydrated the apple slices, then I put between 2 sheets of plastic wrap and rolled lightly with a rolling pin. I then put these sheets between 2 barquettes and dried for another day. I filled them with a waldorf salad for a garnish on a pork platter.
You can get dehydrators cheap- like a Ronco type unit for about 25 bucks. You just slice whatever and leave them overnignt and it dries them out. Besides fruits and vegetables, you can do meats to make jerky.