Get a set of these! They're about $10 for 20 pairs. Keep a pair for yourself and hand the rest out and make friends.

So far...

• GLOW STICKS - I bought 1,000. Last year I did the same and it was so much fun throwing them around the Sahara tent. I hope people don't mind. Everyone seemed to love when I handed them out.
  
• and these awesome glasses.

http://www.amazon.com/20-Pairs-Diffraction-Fireworks-Glasses/dp/B005JT5P7A/ref=sr_1_1?ie=UTF8&qid=1384231763&sr=8-1&keywords=refracting+glasses

in case you couldn't find them :)

https://smile.amazon.com/gp/product/B005JT5P7A/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

Will arrive by Monday at the latest

I bought these last year. They are cheap and made of paper, but they get the job done and you have 49 of them to give away. I have a nicer set for myself now, but for 40 cents a pop, you can't beat them for things to give out

Edit: Cheaper here, only 12 cents per pair. Damn