Lol! You can use a regular range oven.... I tried both the convection toaster and the oven -- the oven takes a lot longer, uses a ton more energy, and overall I wasn't able to get it as crispy as I did in the toaster oven. I usually run it at 220 convection, on an elevated rack, for about 45-60 mins, flip the cuttings, and run it another 45 -- several times because of space restrictions.
But if I'm going to keep doing this I'm going to get a dehydrator because it's like a hundred bucks and has a lot more capacity.