For some grouping examples:
http://www.darknessandlight.co.uk/arrangements.html

some hanging options:
http://www.diynet.com/DIY/print/article/0,2058,3103,00.html
http://www.hgtv.com/hgtv/dc_furnishings_other/article/0,1793,HGTV_3433_1385516,00.html

http://www.dotplanet.com/life/features/button.asp

Thanks Sara!