With all the green talk in the air, overpopulation is a hot topic. Remind the worry wart on your gift list that life could be so much worse: give them a Tribble or two.
You remember Tribbles, don't you? Every Star Trek geek worth their salt does. These furry faceless creatures were irresistible, until the Enterprise crew realized that they loved to breed at lightning speed (not unlike some people you probably know). These Tribbles, available for shipping, have been "fixed," so they're cuddly and comforting, sort of like fluffy rocks with personality.
A giftee doesn't have to be a Trekkie to appreciate a trio of Tribbles, although it wouldn't hurt. You can beam them to the location of your choice through www.thinkgeek.com.