My dad used to dye the milk green on St. Patrick's Day. I never could drink it, if only we'd made some of these cute crafts and games!
Here is a paper plate craft from Busy Bee!
Maybe a combination of the paper plate one with this one from Happy Home Fairy.
Here is a Shamrock Toss game from Fun in First!
Here's a writing activity from The First Grade Parade...I feel lucky when...
This mini unit from What the Teacher Wants has some great printable for graphing, writing, and math.
I love the "How to Catch a Leprechaun" idea!
Mrs. Morrow's Kindergarten has so many great ideas at her site. Here are a few that I think I might use.
Measure a 4 leaf clover
Writing about having a pot of gold
Gold pieces addition