Spark your coworkers’ competitive streak and host an office raffle or auction.
For raffles, you could do deals to encourage people to give that little bit more for a better chance to win. Source prize items from local retailers who may be willing to donate or give you a discount, and work those network connections for better deals.
Who knows, the boss might even be willing to offer a special money-can’t-buy prize—like a no-questions-asked day off or a high-end lunch date. Let the bidding begin!