I have found a better version of the Funtastik.

Good 'ol Brigade Quartermasters has a 3 pack of LED sticks for $7.99. They are made to come apart and have replaceable parts. I bought a pack of them last week and was very happy to find out they lived up to the description. Unlike the Garrity lights these do not have a lanyard and the switch keeps rotating instead of having to turn one way and then the other.

I definitely like these better.
LED Lightsticks