A gimmicky 2003 issue aimed at children which was sold not only at post offices but at Sainsbury's supermarkets. Didn't take off that well although some teachers found them useful and there are mentions on several "teachers' aids" websites.
Next year, Finnish residents will have the opportunity to use something similar on their mail as Intelia put their version on sale:
10 Things You Didn’t Know About Fountain Pens - [image: fountain pen friday] Today is Fountain Pen Friday. There is always something quite special about writing with a fountain pen, don’t you think? If...