My favorite lure for Brook trout in small rivers and creeks is a tiny Panther Martin. Part of a series, my guess is that it's 2g or 1/16oz. The wire diameter is about .5mm or .0196". It has a in-line Sonic blade that spins great. I've found some on the internet to purchase but none are exactly the same. It has a tiny hole and all the ones I buy, the holes are larger, and it seems to make the starting speed to get spinning, higher.
To throw small spoons and spinners I use a ultralight rod, lure weight 1g-7g, with a 2000 series reel. I put 10# braid with a double uni-knot to 10'-12' or 3m of 4# monofilament with a plastic bead and small snap swivel on the end.
I purchase stainless steel orthodontic wire in small coils from the internet to make my wire baits. I mostly work in sizes .5mm - .8mm or .0196" - .031". I cut it in small pieces and straighten it out by eye with my fingers. I bend the wire using jewelry pilers I bought online. I have one pair that has a rounded side and a cupped side. Originally the cupped side is machined with a hard edge, I took a file to it so that it doesn't pinch and score my wire when bending. I have a pair of cheap plastic safety glasses with bifocals built in, they really help.