This is hard to answer since we don't know what your interests are, your skill level, etc. By the way, thanks for filling out your profile so we know a little about you.
Do you have a good wedging table? How about glazes, or glaze mixing materials? Underglazes?
Everyone should have a sponge on a stick.
Mini-extruders are fun. Manual sprayer..the little one you blow through.
I love my giffon-grip, but you should learn how to trim without one if you're a beginner.
Maybe a variety of bats to see which you like.
Can't think of anything else...except my dream list includes a pugger.