Work at home / coffee shop / park is a pretty cheap option. Give the boss an enormous office big enough to hold the whole team at some discomfort, but its only used for team meetings or the occasional (rare) large team effort. Head down grinding is done at home or somewhere else.
Also sub-team meetings often happen at a coffee shop. Three dudes at starbucks not the whole dept or whatever.
I've also seen people working at the public library, although its difficult because so many parent use it as a day care center drop off site. Aside from the homeless shelter antics.
Those are all very decent options as well. The better companies I've worked at understand that programming is neither 100% solo work or 100% collaboration, and trust me to chose accordingly. This means some days I'd come in to work and spend time planning/brainstorming with the team, and other times I wouldn't come in at all because I was grinding away.
Thinking back, those were also the companies that didn't force me into a giant open floor plan with a ton of other people... the ones that did tended to be much more focused around "cars in the parking lot by 8:30, butts in the chairs until 5".
Also sub-team meetings often happen at a coffee shop. Three dudes at starbucks not the whole dept or whatever.
I've also seen people working at the public library, although its difficult because so many parent use it as a day care center drop off site. Aside from the homeless shelter antics.