The average wedding dress is made of meters of fabric which could be used to make several different types of different items, or the dress itself could be reworked into a different style.
You could take some of the fabric and make pillows, handkerchiefs, scarves and christening gowns. Satin is a lovely soft fabric which would be great for pillows, throws or scarves. Tulle or organza from the veil for instance could be used for doilies for a formal dinner service, shades for a lamp or a light neckerchief for a summer outfit.
If you want to recycle your dress into a different style you could keep the bodice, but change the skirt away from a voluminous dress into a less formal A-line cut. Then you could wear this at a different occasion like a fundraiser or graduation ceremony.