Advent / What do we buy?

Yesterday, I was suckered into buying a stack of something because it was on sale.  Yes, I thought it was something I wanted and something I could give as a gift.  But I went overboard and did that because it had a sticker:  the sale was good until Dec. 5, which was yesterday.

Now, that I am laying awake, I am thinking:  what else have I "bought", that in the end failed to deliver, but that was very good at advertising itself?  Buy now, it said.  I am good for you.  And on top of it I am, a good deal.  Except it was not.