Here's one I do that never fails to be fun as hell. I'm all about the relaxed, be a dumbass kind of humor and lighthearted fun.
Go for coffee, conversate, laugh, and get comfortable with each other. After about 30 mins we go to the nearby barnes and nobles. Go to the kids book section. Get a kids book, preferably something by Shel Silverstein i.e., Where the Sidewalk Ends or A Light in the Attic. Lead the girl over to the little stage they usually have in the kids section. Get a seat and sit her right in the middle of the stage. Get a whole bunch of stuffed animals and place them around the stage like they are the audience. Tell her I'm going to read her a poem and then she'll read me one, out loud. The girl always gets embarrassed and says no. But I make her do it anyway. So I read a poem and act it out all over-dramatically, EXTRA loud so everyone in the store can hear me. People usually come over to look and sometimes kids will sit down with us. I read the poem, take a bow, then kick her out of the seat and make her read me a poem the same way I did. If she doesn't read loud enough or act out enough I boo her till she finally get's into it. We go back and forth with about 5 short poems. By the time she's really loosened up and we're both having a fun, silly ass time. I put the animals and shiet back then take her to a private section, near the massage books. Get a hand massage book and sit close to her and tell her to pick one from the book and practice on me. She does and then I do the same. Give a couple different hand massages from the book. Then go back to my car, drive her back to my house making light conversation. Get to my house, give her a quick tour ending with my bedroom. I'm sure you know what happens from there.
Other times I go for ice cream and then to the local animal store play with animals. Sometimes tea and a late night walk around the lake and play on the kids equipment (which is what I did tonight). Window shopping. Taking her to run errands with me. Grocery shopping. It doesn't matter as long as we're having fun together. But always make sure it ends back at your house! Always have her meet you at your house in the first place to make this a natural ending to the night. And don't try to get freaky till you're in your room. Light kissing and touching beforehand is cool but the freaky stuff should be saved till you have privacy in your house.
-Soma