Unusual Pens - Part 1

Tim has hundreds of unusual pens in his toy collection, Here he demonstrates just a few of them.

Some pens have flowers that open at the top; a pen (maybe for doctors?) looks like a syringe; a crocodile and a shark pen both have teeth that bite; there is an extendable pen, a pen that tells you how many miles you have written, and the challenge pen - you need to solve the maze before you can write. Maybe not good for that flash of inspiration that needs to be written down immediately!