I found these comical travel pack tissues at The Christmas Tree Shop, and I just had to get them. They combine two of my favorite things - typography and tissues. Both of which I use in great amount. I'm rarely without tissues - they're in most rooms in my house, at my desk, in my purse, in the car. It may be a bit much, but I don't think I could live without them. I also can't seem to live without typography. I work with it all day long and notice it everywhere I go. I'm not saying this is the best use of typefaces or leading (some combinations are frightful), but they are clever.
My favorite: "Tissue? I hardly even know you."