CSU Sacramento Japan Day (4.12) on Family Day
and the San Francisco Cherry Blossom Festival (4.11-12, 4.18-19)
Here are some Hina Matsuri links:
Make your own display (scroll down to print in color)
Here's a meal you can make at home that's often eaten on Hina Matsuri (and other times of the year, too.) It's called Chirashizushi and Cooking with Dog will teach you how! If you don't like cooking it's on the menu at many Japanese restaurants, too.
Here are some other great Hina Matsuri recipes.
Origami Club also has some fun hina origami. If you scroll down to the bottom of the page you can find some games and activities, too.