This not actually something I have done, but a gift I received for my birthday a couple of weeks ago.
The embroidery you see here is one of two pieces my grandmother Robin got framed (the other going to my cousin Anna, also for her 30th birthday). Each piece is actually 1 corner of a linen tablecloth that Grandma started in 1944 before she go married - she did 2 of 4 corners and never finished them. When she showed me, I thought it would be a waste if this beautiful hand embroidery was never viewed (which was definately the case when it was a 1/2 complete tablecloth). So after about 2 years of nagging, Grandma suprised me with it for my birthday!
The photo is of Robin about the age when she did it.