A multifunctional box organizer includes a hollow main body provided with at least one slit, via which magnetic bookmarks may be extended and then bent to magnetically attach to the main body, and a coin slot located at a distance from the slit; an open bottomed enclosure fitly received in a lower part of the main body; and a bottom cover closed to a lower open end of the main body to define a closed storage space in the enclosure. The enclosure is provided with an opening corresponding to the coin slot, so that coins may be inserted through the coin slot and collected in the storage space. Coins collected in the enclosure may be taken out by opening a cap on the bottom cover. A space in the main body above the enclosure is divided by a partition into several subspaces for holding and sorting pens and different articles.