My brake lights aren’t bright enough

[Kern Dog]

It is cheap and easy though, just like my cousin.

 

[RemCharger]

I use a good size prybar locked between the seat and pedal for brake light checks

 

[Kern Dog]

I could rig up an adjustable tubular bar clamp set to expand rather than to compress....but I think that a single purpose tool like that would rarely get used.
A 2 x 4 cut to size makes more sense to me since I always have sections of lumber around here.

 

[OneWheelPeel]

I always have something laying around that I can use to push the pedal if I need it, either to wedge against the steering wheel or the seat.