Warning: the following hacks are not actually team-building, but rather clever excuses for not doing actual team building.
1. No Actual Work Required: a hack where you just pretend the project is complete and send out a group email saying "it's done!"
2. Blame It On John: a hack where you shift the blame onto the quietest member of the team, even if they're not actually involved
3. Make It A Meeting: a hack where you call a meeting and then just talk for hours about nothing
4. Free Coffee Is Not Enough: a hack where you demand more free food and drink from the company cafeteria, because, clearly, that's all that matters