I haven't had that, but when I had an IDB voucher that was close to expiring, I took a quick weekend trip to London.
The voucher paid for almost all of the ticket, although not the taxes. A weekend was about all I wanted to afford (thanks Mr. Greenspan) when it came to paying for the hotel and miscellaneous stuff. That got a few people around the office making some assumptions about the size of my paychecks, and trying to figure out how I can afford to 'weekend' overseas.