This is So Simple, Its Stupid, Yet it took a while to find. Someone Else already did it, But I had to confirm it works.
Idea came from here:
https://www.anothercoilgunsite.com/nf-portable-construction.htm
Ive always wondered if A 555 Can be used to make a boost converter circuit, But My experimentation Confirms it. Some years Ago I bought this package of Inductors at radio shack, and Ive had them for a while. Using Values I just picked out of the Box, I got up to 50V From a 5V PSU. Sure, You can buy A Controller to Do this, But This is something you can build with parts from your box.
Note: I didnt worry about the Regulator and Stuff, I just used a Power NPN on the output of the 555. I also tried it with a Homemade Coil and Got up to 30 V. BTW, My NPN Got Hot during the process, but I didnt have it heat sinked, and this was During Measurement.
ADD: Heatsinked It and Its Cool.
Also, I dont know how much current this circuit can supply, But it looks like we might have another Joule Thief on our hands!
Values I used: C=0.001uF, R1, R2 = 5.6k . Vbias= 8.6 ohms.