trading cards
Such cards include card games, sports cards, and movie sponsor cards, but not standard playing cards.  They are usually paper or cardboard based, and have a distinct lack of any electronic and/or external stimuli.  This is likely the reason for the major lack of appeal.
Trading cards are so lame because they require my own input and energy to get any enjoyment from them.
Trading cards are so awesome because they require my own input and energy to get any enjoyment from them.