So this is the alevin pattern I'm fond of using, after trying out several variations of other patterns. Easy and quick to tie.
Size 6 or 8 hook
Flash & Marabou/Chickabou
OR - small pearl mylar tubing
Rubber tubing and black chenille for head/eyes
I use globug hooks, but any short-shank, wide-gap hook will work. A wide gap hook is necessary to give yourself enough gap around the egg sack.
I take a piece of small rubber tubing that float fisherman use to hold their line to the floats. It's little - like 1/8" OD. (Small silver bead chain eyes will also work.)
So to start I cut a piece about 3/16" long and stick the hook through the middle of it and slide it up to the eye.