Quiet hours, especially in a cube farm. Free soda, coffee, tea. (I'm a little negative on free snacks, but if that works for you, okay). Subsidize access to t

Quiet hours, especially in a cube farm. Free soda, coffee, tea. (I'm a little negative on free snacks, but if that works for you, okay). Subsidize access to things like the ACM portal, or other subscription journals. Buy technical books for people. A shooting range in the basement. ("Let's go think about this problem over a few rounds" has a different flavor). While zoning and other laws would make this impractical, some of the groups I've been in have had "range days," and they've all been a lot of fun, even -- or maybe especially -- for the newbies.