Bless you, Not Martha, for linking to this recipe for polka-dot Fruit Roll-Ups.
I don't have a fruit dehydrator, and don't really have room for one, but this almost makes it seem like a good investment.
By the way, wondering where "polka dot" came from? The Wikipedia entry says that it was indeed named for the dance, but not through any logical connection, just because the dance was popular at the time the dot pattern became used a lot. Great. Look forward to new patterns being named "the Lady Gaga stripe" and "the Glee diagonal."