Once in a while you can find free promotional items that are made of reflective tape.

I have a few strips from Tim Hortons Coffee Shop that I think were intended for Halloween costumes and CRIMESTOPPERS stickers are sometimes reflective.

Reflective tape is also sold at Canadian Tire in the trailer or vehicle trim section (but it is not cheap).

I posted about using reflective tacks as trail markers earlier and I remembered a couple other items for this purpose. One is like a white reflective garbage bag twist tie that you tie on branches, the other is a small bottle of liquid that you squirt on a tree, it looks like water but at night the wet area is reflective (this was not as good as the tape).

The reason I use this clandestine method of marking my hunting trail is that if you mark it with flagging tape other people follow the trail in and disturb the hunting area (or steal/damage my tree stand).

Mike