You may or may not have seen this simple item before. I'm all for making life easier.
It's called 'Spare Air' which basically is an extension lead so you can check your spares tyre pressure and inflate/deflate it without crawling under the car.
You could quite easily make it yourself but being basically lazy I bought mine from Super Cheap at Underwood (Brisbane)for $30 and took all of 10 min's to fit. Just screw one end onto your spare then mount the other end somewhere up near the tail gate/bumper...easy, then check the tyre pressure standing up
I took some photos but have no idea how to upload them here, so just click on the below link and it'll take you to my photos. Click on each photo to enlarge. Hope this helps someone.
http://spartan.smartybuilder.net.au/sites/c9/c996da9185c633a332fbe5bde83dc2a4/__preview/page8.php?view=thumbnailList&category=6
Mick