Abstract: A three-dimensional triangular paper block paper folding aid includes a primary forming board, which the top end being a base block, and the base block extends obliquely towards both sides to form two isosceles upper bevels, and then extends inwardly and obliquely to form two isosceles lower bevels, which being coupled into a right angle (90°). One of the sides of the primary forming board has a vertical midline with a length substantially equal to half of the length of the folding paper, and the turning points between the two upper bevel edges and two lower bevel edges on the other side of the primary forming board are connected into a horizontal midline with a width substantially equal to the width of the folding paper, and the vertical midline and the horizontal midline provide a positioning guide to the folding paper.

Abstract: An automatically rotatable lamp ball includes a power unit provided with a motor having its downward shaft driving two rollers to rotate and its upward shaft driving a lamp arm to rotate. The lamp arm is disposed thereon with a plurality of LEDs, and the integral body of the power unit and the lamp arm is received in the interior of a transparent outer casing and actuated to rotate therein for pushing the outer casing to roll freely at the same time. When the lamp arm is actuated to rotate, the LEDs installed thereon will simultaneously give out flickering lights in sequence and at intervals and, due to visual persistence, presenting freely movable stereoscopic light patterns or letters. So the invention is innovative and exclusively original in structure and having excellent entertaining effect.