It's high-tech functional biodegradable cleaning goo. You can stick it in your keyboard to pick up all the stuff you drop on there. (Once I took a screwdriver to my keyboard and found ants underneath. Awesome. Only once, I swear. C'mon, all our readers can't be domestic divas! Don't judge.) Anyway, this is a bit nontraditional for this blog but I find myself entranced.
$9.99 at ThinkGeek