My Little Doghouse
Have children make mini doghouses from white cardboard boxes sold at stationery stores. Make "roofs" from cardboard folded in half, using coffee stir sticks to support it. Then let the kids decorate their doghouses. At the end of the party, give dog-themed goodie bags: a tiny toy dog that will fit in the house, dog- or dogbone-shaped sugar cookies, dog stickers, a rubber ball.