Silly thing really, but my shaper fence fastens to the shaper top with these two long "bolts" that drop two-and-a-half centimeters (ok, an inch) below the bottom the moment I lift it up to move it, and make it really awkward to set the 45 kg (ok, 100 pounds) down easily. I glued up these little wedges and they work great. Put the plywood on so they wouldn't split apart. Don't know why it took so long for me to think about doing this.
Any other little ideas like this? What about a cart that moves the fence at the same height as the shaper top?