I know I’ve seen a thread where someone weathered their pack with slime but I can’t seem to find it. I was thinking of doing this and I wanted to see what others have used and what the results were. I was also thinking about it being glow in the dark or black light reactive. What do you think?? Here is my pack at the moment as I plan on adding the missing wand pieces soon so I figured it would be a good time to add some slime.
I put slime on mine. All i did was bought a bag of glow-in-the-dark green powder from Ebay and mixed it with some PVA glue. If you water it down slightly you can get it ro run and make splatters with it.
Heres how she looks during the day…
and when the lights go out…
Its also really fun when your wife turns out the lights and finds out you did it in the front room as there are little green glowing spots all over her livingroom floor oops 
This is a cool idea. I like the subtlety of it during the day, but at night as well. Very cool! I might have to do this on my pack.