With dd we just changed her on the table or floor but it did dp's back in. this time we still don't want a changing table but would like to buy a top/tray type thing that we could put on an existing chest of drawers for changing but that would give the protection of edges in case the baby suddenly rolls over.
Ikea don't seem to sell these trays separately - is there anywhere else that does (relatively cheaply?) I think John Lewis does one but it's over £50 which seems a bit steep for what we're after...