Creative advertising is an art, sometimes it's bad, sometimes it blows up and creates controversy, if it's good you might not even notice.
Every year I get a calendar for a real estate chick. It's small, just 3.5" x 6", and the top 2" is her magnetic back business card. So where to hang it? On the fridge, and to reinforce that, on the back is a bunch of conversions like 2 cups equals 1 pint, and five tbls + 1 tsp = 1/3 of a cup.
Then way down at the bottom for the unhappy with her kitchen housewife, is this chart. It's only a half inch high but it's handy... you know, just in case you're wondering if you can afford to blow this joint.