Glue sticking the ARF pages together is a great idea!! Plan on maybe using up 1 whole stick per issue?

I think a 1/2A spinner could be made on either a drill press or on a Po' Man's Lathe. The trickiest part would be making a 5-40 threaded coupling, but they might even already exist?.
The backplate could be made from aircraft plywood and the cone from balsa with a fiberglass skin. It would only take about 2 weekends to make, VS having to shell out $5 for one that's commercially available.