Check out these adorable little cactus planter spacemen thingies by designer Matteo Cibic. They are called Domsai. They're a bit on the pricey side (a hundred Euros is around $136 US dollars), but so cute. Cibic thinks of them as “desk tamagotchis.” If you are crafty, you could probably DIY a version with a lightbulb. Though, not sure how you'd make the feet. How great would it be if there were a drain hole at each spaceman's crotch and Cibic's Domsai pees when you water the plant? That would almost be worth the hundred Euros.