Making Rain

I’ve been working on an animation for a little while now and I’ve just got a point where I’m trying to insert rain and i realised i have no idea how I’m going to do it, I was wondering if any of you have any ideas for me to go by?

I dont mind how it’s done, drawn into every frame, a movie clip or anything else you can think of.

An added bonus is if I can get and effect of the rain hitting things in the frame, if i knew how to do rain by drawing frame by frame then i could get that effect quite easily but I’m completely clueless.

It doesn’t have to be realistic rain, cartoon or life-like would both go down well.

I look forward to your ideas :pleased: