Abstract: A pen box structure includes a box body pivoted with a box cover. The box body has one side defining an opening and has two inner walls each provided with a guide track which is provided with a lug that defines an insertion groove. The box cover has an inner face provided with a locking flange, and a lock mating device is locked on the locking flange, so that the box cover forms a proper included angle relative to the box body. A retractable drawer is movably inserted in the opening, and has two ends each provided with an insertion rod movably inserted in the guide track. The insertion rod has one side provided with a plate movably inserted in the insertion groove, and two L-shaped book clamping blocks pivotally mounted in the drawer.

Abstract: An adhesive tape holder structure includes a body, a spool, a first pivot portion provided with a first support portion, a second pivot portion provided with a second support portion, a press roller, a blade receiving portion, a cutting blade. In practice, the position of the first support portion located on the first pivot portion and the position of the second support portion located on the second pivot portion are based on a reference direction seen from a side face of the body. An axis center of the press roller and a middle point of the first support portion or the second support portion forms a first line. The axis center of the press roller and an end point of the cutting blade forms a second line. An included angle between the first line and the second line is smaller than sixty degrees.