I have a 2x2x1 N54 or N52 (forget which). Scary magnet. I can't put it anywhere within about 3 ft of me, because of the pacemaker wiring to my heart.
Reason I bought it was for work and some entry bypass techniques and locks.
Anyway, my wife plays with it and we keep in another room. It will pull a kitchen knife straight up off the table from about 2 ft away even with your hand in the way.
Have fun....