Adding some awesome decor stuff
(Texas)
If there are stairs in the house you can line the edges with glow sticks to add a cool effect and also allow everyone to see where the stairs are.
I was also thinking that you could have any type of white foods that would actually glow under black light like: Yogurt pretzels,white M&Ms, popcorn, white chocolate, etc. Also for invitation ideas you could make neon shirts that advertise your party, and they could wear them to the party also!
You could also make neon balloons and hand them out to people saying they are invited to a glow in the dark/ blacklight party.
Other party decoration ideas would have to be taping glow sticks or putting glow stickers on your fans around the house to make a spinning light effect.
My party idea would continue outside where I have a pool so it would have to be dark, but I was going to find some glow in the dark beach balls or a volley ball and other things to keep people entertained at the pool.
Also beside my pool I got some tiki torches just to add something unique and cool.