I've been sent some chalk pens for free from Chalkola. I've had a quick try of them decorating these chalkboard baubles from Hobbycraft. I found they work better than traditional dusty chalk, There's much more staying power but the chalk can still be easily erased with a wet cloth. I haven't tried any other chalk pens so cannot compare or review them properly.
Check them out for yourself on the Chalkola Website http://www.chalkola.com/
They're available to buy from Amazon, both sets include a white pen.
20% Off on Amazon - Coupon Code -> 20OFFSTR
For ideas to use chalk pens and chalkboard paint checkout my Chalkboard Art board on Pinterest
Disclaimer: I was gifted these pens and voucher by Chalkola for free. I was under no obligation to write this post and didn't or will not receive any payment or commission. Opinions and images are my own.