This was one of our Halloween Party activities. It is very easy and you end up with very cute Halloween decoration for years to come :-)
First find some cute glass jars, wash them and dry them so they are ready to be painted.
Then, if you happen to have a witch at your house at that time, have her cut out the Jack-O-Lantern face out of a painters tape. (you can also do it yourself ;-))
...and have the kids tape it to the jar.
Now it's time to paint the jars orange color.
And let them dry.
This is how they look all lit up with a tea candle!