Boingboing makes noise about a transparent propane container, made out of fibreglass, which allows you to see how much gas is left for your barbeque.
Well, puh-leeze, the Norwegian oil/gas/hotdog company Statoil has sold a propane container with this feature for at least 10 years (that is, it was available here in Norway when I moved back in 1996.)
That being said, my view is that the main benefit is not being able to see how much propane is left, but the fact that the fibreglass container weighs much less than the traditional steel one. I have a bad back, and really appreciate this feature.
The funny thing is, no other company than Statoil sells this version – since propane gas containers have a return deposit – meaning that you have to shell out serious money to get a new one – it is very hard to break into the market with new technology. Hopefully this is not a problem in the US, though that remains to be seen.
UPDATE 7/30: This is indeed a Norwegian invention, it seems, from a company called RAGASCO.