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This is easy to type if you are looking for a few (hundred) "missing" megabytes (and don't mind the occasional K slipping in)...
A variation without false positives and also finding gigabytes (but - depending on your keyboard setup - more painful to type):
du -hs *|grep -P '^(\d|,)+(M|G)'|sort -n
(NOTE: you might want to replace the ',' according to your locale!)
Don't forget that you can
modify the globbing as needed! (e.g. '.[^\.]* *' to include hidden files and directories (w/ bash))
in its core similar to: