"Squidfly" may be an oxymoron, but who cares?
There are a myriad of good squid flies out there, but I wanted to make one that:
1. sinks fast--many of the bulky marabou/buck tail combo look great dry, but do not sink very fast.
2. that keeps an "arms open" silhouette when wet. Many of the dry cool looking squid flies change shape dramatically when wet.
3. could be tied in 5 min. or less.
Here is what I came up with, using the monofiliment-in flex tube mylar (for decorative rod wrapping applications)

.
The first on is a big, 8 inch fly I pulled the tube apart up to the "head" and then pulled out two "eyes". I coated this with spray lacquer so it would keep its shape until epoxy coating the whole head/eye section.

You can clearly see the stiff mono that helps this material to keep its shape.
I hit it with some hot pink, and added four eyes, two on each side.

The left side....

and the right side...

Finally I added some epoxy (two coats) to seal in everything, and help it sink faster. I used a vertical ringed 4/0 owner hook, which is made from pretty stout diameter material, so I did not wrap my customary lead wire on the shank to help it sink faster.

Next, using the Owner outbarb short shank hooks, I made some "short squids". We have a mini squid here, called a "hotaru ika", which many species of gamefish feed on.

Both the silver...

and the gold material look good (IMO) with the hot pink paint.

Finally, like the 8 incher above, I coated the head/eyes over with two coats of flexible epoxy.
Both the hook styles I used have large diameter ring eyes; I plan to tie the shock tippet via a loop through the eyes, to give these flat flies some darting action.
Rock on, Rock solid.