I have a large corner upper cabinet but the door isn't that large. I use the first shelf for my measuring cups and a few other things that I use daily. The second and third shelves are mainly for storage items that I hardly ever use.

Do you think I should move the tupperware to the second shelf? I am short but keep a small, cheap kids' plastic stool to get to the higher shelves.

We switched to just two siZes of Glad storage containers and they fit inside each other. The rectangular salad size and the large rectangular 9 cup size. I keep that in a lower cabinet in a bin that I used to store potatoesin. I got rid of a lot of the other assorted sizes of glad and ziploc.
I pulled out an entire two boxes of other tupperware stuff and when they sit on the floor long enough to assure me I won't miss them--out they go. Its great to store flour and sugar in tupperware but aside from that --the plastic lite stuff is fine, and I can give away stuff in it, or bring it to work and throw it out if necessary.

I keep all of my tupperware in a very skinny cabinet (9inches wide I think)right next to the stove. That's the most convenient spot for me to pack up the leftovers from dinner. I have various sizes and 3 different shapes of rubbermaid (round, square and rectangle), but they all go into 3 neat stacks with their lids beside them because they are all the same brand.

I do not think tupperware should really take up that much room. I do have a few larger tupperware containers that are on the top shelf of a larger cabinet, but they're probably stuff I should toss or at least store in the garage since I use them so rarely.