Outdoor Movie Party
No reason to sit inside and watch your lil one's favorite flick, when the weather's nice. Local A/V stores often sell inflatable movie screens, or they can be rented from party supply stores, where your tot can screen her favorite film for her friends. Depending on their age, create a true red carpet entry to your yard, complete with "photographers" photographing their every move. A menu filled with favorite theater snacks will keep everyone munching throughout the showing.