Here are two of the sweetest vintage trolls in my collection. Measuring only 2 inches tall (not counting their hair), they have pins on their backs so you can wear them, and for some reason they have "HI" spelled out in felt letters on their fronts. They're a fashion accessory and a low-tech communication device rolled into one!
Here's one of the Hi! trolls with her friend, Kampy Kiddle, a 1960s Liddle Kiddle doll. They just looked like they belonged together when I got them, and now they're inseparable.