Andy - for straight inlines a boggs or twist tech wire former work well, several of the guys here have them. I have the old Netcraft wire former and it's turned out ALOT of inline spinners, but the eyelet size is larger due to the former itself.
Wire for me I buy in 1/4 lb. coils. When I first started making them back in the 80's all I used was .024 stainless steel wire. but a good size fish smacks it that wire can bend up. I've pretty much only been using .029 ($9.95, 1/4lb coil at Janns netcraft). I also use the wire for making v-spinner frames (Beetle spin).
http://www.jannsnetcraft.com/ss-lure-making-wire/311666.aspx
for blades that need a clevis - I've gone to the folded ones. If you use the in-line blades you just put them on. I use glass, plastic and metal beads, I use one between the body and the clevis, and sometimes one above the blade and clevis.
http://www.jannsnetcraft.com/folded-clevises/320912.aspx
There are brass and nickle bodies like the ones on Mepps that you can buy but due to a trade here on the board I'm using ones made from lead out of a Do-it mold. They powder really well but you have to have a rack that will hold them where the body doesn't touch anything. You can see the size of the 1/16th bodies by looking at the spinners I've posted in this section. The 1/32nd's are about half that size.
If I can help you with anything else let me know - Initial start up costs for making spinners can be expensive.
