What a great idea! Simply finish the edges of your tablecloth, then randomly add motifs here and there. Better yet, lay out threads and have your friends over – each can stitch a square or two. Wouldn't that be great for a wedding present?
From Samplers Remembered, this French Reproduction sampler has an alphabet that is so lovely as there are tiny hearts within the alphabets. The stitch count is 353 x 178 and is shown stitched on 40ct Ricamo Ivory (substitutes available - would be lovely done on any count of fabric) using DMC floss.