Download free maps and guides to Madrid via the official website (in several languages).
Buy a family film by Twentieth Century Fox and get a free experience pack for families. Purchase at Media Markt or Fnac before 15 Sep and send copy of receipt by email.
Conforama furniture stores are having a sales tax free weekend 26-28 Jun, leaflet states applicable on all furniture but small print says only on a selection of items!
Families expecting a baby can get a 5€ discount for Babies R Us.