I tested out a few pieces on a cheap hi-viz orange jacket that needed some reflectivity.
It was surprisingly easy to use.
Presto! Slow Vehicle Triangle thingy:
I decided to add reflective tape to my gaiters too:
I'll be interested to see how well the tape stays on the gaiters, they take a lot of abuse and washings.
UPDATE: 2 weeks of use/abuse and one wash and trip through the dryer.
I see some cracking on the gaiter, but it seems to be holding up overall and still reflective.