I wanted a really traditional "birthday" theme for DS's 1st Birthday so for decorations I got a bunting/flag banner, made pinwheels for centerpieces, used sheets from the thrift store for tablecloths, and got some balloons.
The bunting and crown from etsy were his birthday gift from us

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For food I got a sandwich tray made at the co-op deli and asked each of DS's many grandmas to each bring a side (fruit salad, potato salad, 3 bean salad, etc.) I made cupcakes and decorated them like lions because DS is a leo. And we had a bloody mary bar, and lemonade to drink.
It was such a fun party and turned out exactly how I wanted

. You can see pics here-
http://www.facebook.com/album.php?aid=197215&id=825407909
There was probably about 30 adults and 5 kids.