Hang measuring cups inside a kitchen cabinet. Position and mount a wood strip so that cups will hang between the shelves and allow door to close completely. Mount a second strip for your measuring spoons, then screw in cup hooks on both strips.
Measurement conversion chart and labeled measuring cup holder for your cabinets doors. (I did this and every time I opened the cabinet, the cups would SMACK the door loudly. It would do better just in a cabinet and not on the door.
Hair Appliance holsters: Use hook-and-loop tape to attach lengths of diameter PVC pipe to the vanity door to hold the curling irons. Do the same thing with pieces of pipe to hold the cords. Let your curling irons cool before you stow them away.