I have wondered in the past about a "dual-coil" in a figure 8 pattern. So it would be a single length of wire and in effect a single coil, but with two wicks. It would be twice the resistance of a similar single coil, rather than half the resistance that you get with a real dual coil. So you could wind it with two pieces of wire twisted together to get the same resistance as a single coil of the same size.
It would be fairly intricate work whether you did that or just a standard dual coil. Whichever you do, practice first with simple single
coils. Winding the coil is not the hard part.
Do not even consider winding coils without a resistance meter. It is very easy to get accidental short-circuits, even if the coil looks perfect.