Here are a few picnic table plans as I promised -
A kind of classic table -
http://www.handymanwire.com/articles/picnic.html
A round one in sketch-up -
http://sketchup.google.com/3dwarehouse/ ... revstart=0
A Hex one that folds up -
Neat!
http://www.motherearthnews.com/Do-It-Yo ... olves.aspx
Another round one with round benches -
http://www.thewoodcrafter.net/proj/p31.php
Octagonal table with included seats -
http://www.buildeazy.com/newplans/octag ... table.html
If you want more I can find more but this should get the creative juices flowing.