What he said^
bucket paint + mineral spirits + mop = colorful tags
you're welcome.
oh and for glow in the dark... Krylon makes and "GLOWZ" glow in the dark latex paint. Now it's up to you to figure out the rest.
I've never seen a homemade pen that could drip without applying at least a little pressure to the container..
I wish I could post pictures of my homemade beauty.. I call her The Destroyer.. She's got a 3 inch diameter on the nib:D