Re: Quills for Dries...
Most any fly shop will sell packs of stripped dyed quills for about $4 or so for a pack of 25, pre-dyed in the bug color of your choice. Most of the ones I've sen require a presoak before tying to get them supple, but I've never tried McCleans.
Fly shops should also have Indian and Chinese necks for around $4-6 if you want to do the whole bleaching solution, RIT/Veniard/Kool Aid dye thing.
If you need an on-line source, Hook and Hackle has all of that stuff, as would Stockard, Kaufmann etc.
Hope this helps,