It's an easy hack but wonderful idea for a wedding. Sheri's wedding gets a touch of Ikea.
"For our August 2008 wedding, my wonderful mother and her best friend transformed three sets of twin bed sheets from Ikea into 130 table napkins for our wedding reception, and an equal number of jam jar covers (aka a jam jar cosy). I wish I could remember the name of the sheet set but as it was last summer I forget, and it is no longer in stock. Regardless, we already had our wedding stationary designed and I was absolutely floored when I was shopping at my local Ikea store and came across the nearly identical pattern on the sheet sets."
You may also want to check out this wedding centrepiece.