We found so many neat ideas when we did Glow in The Dark Week around Halloween that we wanted a chance to do them when it was really dark.
Now, just to clarify there is difference between things glowing in the dark and glowing under Black Light. The glowing activities we did all were made possible by the use of Black Light.
Our first obstacle was to determine how we could get enough black light in the rooms to get the right effect. Unfortunately (in terms of this venture) most of our lighting is fluorescent tubes. Black light tubes for these (4 ft) run around $13 each at Menards. After experimenting we discovered that we can just use one bulb in most of the fixtures. (Our plan is to get more bulbs each year).
I lucked out and found clearance Black Light bulbs from Halloween at Menards for $1.50 each. We put those in all the ceiling fans we have in each room. They weren't very bright but they did help.
Once all the black lights were put in we were pleasantly surprised at how many things 'glowed' that we hadn't planned ahead of time.
We set up three rooms with activities. Our biggest disappointment was our Cosmic Bowling. We tried using Glow in the Dark paint on the pins but since they were colored and not white they just didn't glow. (We are already keeping an eye out for a set of white pins). We had a disco ball to add to the effect but it just wasn't what we'd hoped for. Kids still had fun bowling.
We had some neon pony bead and set up a table to make a necklace. The end of the string was hard to see, but thanks to one of the dad's playing around with a high lighter we got the idea to color the end of the string with highlighter so it would glow. This made it easier to see where to put the beads on the string.
The biggest hit was the glowing play dough.