What Can You Do With A Mason Jar?

I love Mason jars - well, jars of any sort really. 

So I was looking for some to purchase online and came across some links to crafts with Mason Jars. I just had to keep looking!

Here are some of the Mason jar related items I found (which can, of course, be used to repurpose any jars you have):

How to tint your Mason jars using food colouring.
http://www.masonjarsales.com.au/tinted-mason-jar/



Various ways of making flower frogs - to turn your Mason jars into vases.

http://smashedpeasandcarrots.com/how-to-make-mason-jar-frog-lids-tutorial/

http://www.fresheggsdaily.com/2014/07/diy-mason-jar-flower-frogs.html

This one looks like the easiest - just a piece of plastic cut to fit with holes punched in. It would take seconds to make.
http://diymaven.com/2013/10/29/how-to-make-a-fast-and-easy-frog-for-a-mason-jar-vase/


This is a link to 50 Best Ways To Use Mason Jars.
http://www.countryliving.com/diy-crafts/how-to/g1821/mason-jars/

This one is to 20 Of The Best Mason Jar Projects.
http://www.listotic.com/20-of-the-best-mason-jar-projects/

How about a Mason jar dessert? Peach Yoghurt Parfait.
http://www.mypapercrush.com/mason-jar-dessert-peach-yogurt-parfait/

Washi tape vases. These can be made with any old jar or bottle and look wonderful. I have bought some washi tape to make some of these - ready for all my flowers this spring (fingers crossed!)
http://www.hometalk.com/3458243/simple-washi-tape-vases-springcolors


Have you repurposed jars in some way? I would love to see some other great ideas.