Improving your office environment?

[bitchstewie]

Wondered if I could get some ideas of things people/workplaces have done to improve the working environment?

Everyone gets along so I'm not coming at this from that angle, simply that the office is a little stale and static - I don't think we're likely to get table football and chairs that look like grass but any suggestions on those low cost "why didn't I think of that?" things would be great