Here are some things I would ban if I was in charge. (And no – while this is a bit facetious – its not an April fools joke.) What would you add to the list?
legal sized paper
paper closing books
the phrase "but we've always done it that way"
any contract more than 20 pages long
any consumer contract more than 2 pages long
technology that doesn't play nice with others (e.g. iTunes not seeing music stored on a server)
those small capacity memory cards that sometimes come with cameras
forms that can only be filled in by hand or typewriter
bills sent with a return envelope when you have paid online for years