Outdoor Coed Baby Shower ideas?

This is my second child, another boy, but they are being born at completely different times of the year so I can't really reuse any of the clothes. No one has said anything about throwing a shower for me this time around, so a friend of mine and I are going to plan one. I would like this one to be more of a get together than a formal frou frou girly shower. I would like for my husband and his friends and everyone to be there instead of oohing and aahing over baby gifts, we can just open the gifts then get on with the party and have a good time. I will be having the shower either the very end of May or in early June (I'm due July 7th, but my Dr. does c-sections 7-10 days before the due date, so I am planning on having it done on the 1st of July). I was wondering if anyone had any ideas for outdoor baby showers, like decorations and such. We are probably going to do just some cheap appetizer things for the food and have a buffet table. We will more than likely have it at my parents house. They have a large backyard with a covered porch and a little pond. Thanks for your help in advance!