Wanna really drive 'em nuts at a session? Strum your guitar with a shaker egg in your pick hand, the effect is really nice when used in moderation. The problem is that most such shakers are a little large to hold at the same time as manipulating a pick. I looked around for a while and found those little plastic capsules which hold little prizes in gum machines (or "Kindereggs") to be about the right size. Instead of using popcorn or splitshot inside the egg, I used the ball ends from worn out guitar strings. About 30 will shake around nicely for an acceptable shaker sound.

I like these poor man solutions. Mooh.