Here's an interesting tracing page for the kids, featuring an umbrella! Trace between or on the dotted lines for some excellent pencil control practice, then you can colour in the finished result!
Umbrella Tracing Page 2
Trace over the clouds, lightning bolts and rain and you will have your own thunderstorm picture! I should think those clouds need to be coloured a dark grey, don't you?
This fun tracing page shows a cloud, sun and rain! Little kids can trace in the channels between the dotted lines, older kids can trace over them all. Don't forget to colour in the picture, too!