Go to Home Depot or Lowes or where ever. Buy a short length of PVC pipe that's about 2.5" in diameter. Buy one domed end cap, one screw on adapter end and a screw in plug. Buy a screw together Schrader valve. Drill an appropriately sized hole in the one piece domed end cap and install the Schrader valve. Glue the short length of pipe, the end cap and the adapter end together. Drop all four TPMS sensors into the pipe. Screw on the removable cap plug. Pressurize the pipe to 35 psi. Put it in the trunk. Viola they are always the same pressure and the light stays off.
No power required. If a sensor goes bad you can replace it or if you want them back in wheels you can put them back. If the light comes on you can just hit the pipe with a little more psi.