Backdrop Off the Head
If you can do a backdrop fairly well, then you could try placing a club on your head, and allowing it to drop down behind you, to be caught blind by the opposite hand.
I once saw this trick done continuously from one hand and it looked wonderful, the clubs just seemed to stick to the juggler's body, and the blind catches made it even more impressive.
Don't look up at the club on your head, it won't help you catch it - this trick relies on touch rather than sight. Feel the club as it falls down your back and try to visualise it as it drops. Keep your head pointing straight forward, don't turn it to watch a club, this helps the clubs to drop in a straight line along the same path each time.