.Pieter von Mussenbroek was
interested in storing electricity in a bottle. He made
a simple device called a Leyden jar.
Your challenge is to
make a simple Leyden jar. This
link will be useful.
Do not get over ambitious with this activity.
The link given above is quite suitable, but larger
jars like the one pictured above in the London Science
Museum can give a really nasty kick.