Maybe, just maybe, you can get a friend's pass that is about to expire and use it for yourself. My brother and dad were strolling the concourse while my mom and I were in the Admirals club. Long story short, they saw some extended family members and my dad's old pass was to expire in a week and he already had his new one. My dad did the nice thing and gave them his old pass as they were going overseas and needed to lounge out before the long flight, but what are the chances of that happening? That was just luck.
May I ask how long your layover or what airport you are looking to stay at and what your final destination is? In some cases, it might not be worth it.
Give me a break, I created this username when I was a kid...