I used white embroidery board by Paper Poetry from Rico design, it costs about £4 for 10 sheets which are 17.5 x 24.5 cm. I painted the board silver, black and gold, though I think you can buy it in different colours.
The card is perfect for stitching and embroidering into so I decided to sew some Christmas images which I drew onto squared paper before sewing properly. This card is really versatile and you could use it to create all sorts of interesting projects.
I managed to get hold of some two fold cards with windows which were perfect for mounting up the images, ready to give people for Christmas!