For blanks Thorne makes and sells some great ones but they also charge a premium for them too. I just bought a 36″ Noodle and Perch Pounder blanks from DH rods. They seem pretty nice at mid range prices. For my tastes the DH noodles are just a bit too stiff in the tip for smaller tungsten jigs for panfish but many do like them for that. I bought mine for a walleye deadstick and think it will be great for that. Very stout backbone.
I’ve made several rods from Sportsmans Direct Extreme Taper blanks. Mostly panfish noodles. They turn out wonderful but I spend a lot of time sanding them down to fine needle tips and getting the taper how I want it. Then using powder pigment and rod finish to color them. Good results but painstaking and maybe more than you want to bite off for your first couple builds.
I will say this though. If you can’t find what you want pre made, you can use sandpaper and an electric drill to sand down solid carbon or solid fiberglass blanks to tune them how you want. Take and record measurements with calipers so you can replicate it later if you want.
I get most of my guides and cork at Janns Netcraft, but Mudhole and Get Bit tackle are good options. Janns seems to be one of the few that stocks cork with a small 1/8″ bore in the cork rings. Most are 1/4″ which is much bigger than many ice rod blanks.
Have fun. It’s addicting!
Tucker