How fun! We did a family tea party birthday party/dinner for my oldest daughter when she was around that age. We had a tea pot cake (with smaller tea cup cakes (not cupcakes, but little cakes that looked like cups!). And, we served cornish game hens on a bed of wild rice with Huntington carrots. The entire family dressed up, boys/men in suits/ties, the ladies all in fancy dresses. We all sipped tea. She LOVED it. It was so special. I like your ideas of finger sandwiches. You can have choc dipped strawberries, truffles, scones, fruit, lemon curd (yum!!), jams. I would probably have a few different types of tea in tea pots, and let the girls pick which ones they want. Let them use sugar cubes and cream for the tea. We host tea parties all the time, and the girls just love trying all the different flavors. If you have silver or china, use it. Make a pretty centerpiece. At one tea party I went to, each place setting had a place card, which was actually a sugar cookie in a rectangle, with the person's name piped onto it in frosting, along with a scalloped edge of frosting. So pretty and dainty. You might buy a few accessories for the girls to dress up with, and that can be their "gift" bag, but used during the party. For the craft, they can maybe dip the strawberries, or otherwise help you make the goodies for the party. Most little girls love helping in the kitchen. You might want to have a lot of it done, but have a few things for the girls to work on to "finish it up." Enjoy!!