Fabulously flat...

...paper pens for Tiny Tuesday today...

A friend was given some as a present last Xmas and I had pen envy ;) 
I just had to buy some for myself, and they are soooo useful! They really do just pop inside a book without distorting the leaves too much..

I've since given them as presents myself, I'm so impressed by them!
Clearly, other very useful pens are available - I'm not on commission ;)