Onboard Flashlight

[DjScribbles]

So, I've seen a lot of teams talk about and use flashlights on their robot; I'm curious how teams typically attach, power and activate said flashlights, and what type of flashlights are commonly used.

The most apparent problem I see is how to power the light:
- There are very few small/compact flashlights designed for 12V inputs
- Per R31 you cannot simply power a light via AA batteries
- Per R50 "The only power regulating devices for actuators permitted on the ROBOT include: ..." this would seemingly disallow the use of a 12V-5V power supply; R51 goes on to show that Custom Circuits are included in R50.
- Powering directly from some 5V source on the Digital Sidecar seems like it could consume more power than would be desirable.

Are there specific flashlights that lend themselves to FRC applications (i.e. 12VDC and mechanical switching)?
Otherwise, am I reading too much into the rules, or ignoring an obvious solution?