Many of you that tie your own flies like to strengthen them with epoxies or polyurethanes to make them more durable. I generally add poly to foam poppers and epoxy on clousers.
here is the dryer I made out of inxpensive materials.

Rotisserie motor and bracket I was not using anyways on grill , 4-6 rpm motor 120VAC
Cut 2x4 as base... free
square wooden dowel cut to length $.98 at Lowes
plastic fly case from fly shop of choice.... free
craft foam inside case used for funeral flower arangements... free
alligator clips from radio shack ...8pack $4.00
wooden stick qtips attached to alligator clips are pushed into the foam... free
works pretty good and saved a lot of money