Abstract: A connector shaped like a circular block having a circular top recess for mounting a male vertical frame rod, a circular bottom recess for mounting a female vertical frame rod, a center through hole communicated between the circular top recess and the circular bottom recess for allowing the screw rod section of the male vertical frame rod to pass and to be threaded into the screw hole on the female vertical frame rod, a plurality of radial holes for mounting a respective horizontal frame rod, and a plurality of countersunk holes around the circular top recess for mounting a respective screw bolt to hold down each horizontal frame rod in each radial hole.

Abstract: A tower puzzle toy including a central shaft, a top cap and a bottom cap respectively fastened to the central shaft at two opposite ends, a plurality of rotary decks revolvably mounted around the central shaft and defining a plurality of radial ball chambers, a top packing ring and a bottom packing ring respectively mounted around the central shaft and retained between the central shaft and either cap, and at least one ball for insertion through a ball inlet on either cap through a through hole on either packing ring into either ball chamber, wherein the at least one ball is moved from one ball chamber to another and from one rotary deck to another by turning the rotary decks around the central shaft relative to one another and/or turning the tower puzzle toy upside down.