I had 0.6L of LN2 and was thinking about doing something with it.
Coca cola bottle + hard seal was one of the ideas, but then I saw the RAM kit on the bench table and said...hmm.... BloodRage NB pot + RAM + classified + memtest86+

And there it went
I quickly set up the Classified, the cool i7 950 SuperMem Controller Edition & the 3 A-data DDR3-2000X DIMMs... boot to BIOS, preset DDR3-2000 7-7-7-23, save & exit & shut down.
I cooled the RAMs to -10C or so and tried DDR3-2050 6-7-5-20... 5 loops of memtest86+ test #5 = error-free
Reboot, DDR3-2200 7-7-7-22 and -5C or so... 5 loops of memtest86+ test #5 = error-free
Reboot, last LN2 drop and... DDR3-2250 7-8-7-23 1 loop of memtest86+ test #5 = error-free

I guess I need a good RAMpot and... well, insulate the DIMMs and the DIMM slots next time I bench on LN2
Vincy Vince do you hear me ?