Stick to your fridge and measure your kids!
A magnetic tape measure you can stick to your fridge, and record the height of your children as they grow. You can then keep it forever, as a tangible record of the development of your offspring much better than scratching it into a door frame, especially in rented accommodation. Buy one for each of the children you know. A great gift for new parents.
Made from a fully recyclable paper and fabric substance called TYVEK which is tear-resistant, with a magnetic backing.
Dimensions: 1m x 2.5cm wide