Herrington Catalog sells very short ( and probably very overpriced ) extension cords designed to "Liberate your Power Strip from Transformer Tyranny". Seems like a reasonable idea.
http://www.herringtoncatalog.com/t748.html It is much easier these days to find outlet strips that have transformer friendly outlets so that there is probably less of a "need" for these mini extension cords.
Then there was the recent post for Leviton's new transformer/phone jack device to more easily mount wall/cordless phones.
