oops, cadmium melts just fine.

However I'm sure there are plenty of gases like CO2 than you can freeze, carry as a solid (with the right cloves) and never see the liquid of (the triple point is above standard pressure).

If you carry water pressurized to 220atm and above 650K (710F), it's not a liquid anymore, even though it's fluid. Such supercritical water exists at vents on the ocean floor (over 2km down).