A multi-purpose tool system installed on the handle bars of a conventional bicycle. The tool system is formed of a main body, and an expansion mechanism, a plug and a fastener. The expansion mechanism is inserted in an open end of a handle bar of a bicycle and the fastener is tightened. This causes the expansion mechanism to expand and tighten against the interior surface of the handle bars thereby holding it in place. The expansion mechanism is formed of a plurality of wedges that are held together by binders. The main body holds a plurality of bits and a cover that includes a driver is connected to the main body by a locking mechanism. When a tool is needed, the cover is removed from the main body, a bit is removed from the main body and inserted into the driver and the cover is used as a handle.

A water bottle cage for a bicycle includes a bracket extending along a first axis and adapted to be attached to a frame of a bicycle. The bracket includes two first sides spaced from each other about a second axis perpendicular to the first axis and a second side connected with the two first sides and facing a receiving space adapted for receiving a water bottle. The bracket further includes at least one attaching device arranged on one of the two first sides, and at least one tire lever is removably attached to the attaching device. The tire lever can be removed from the attaching device without the need to move the water bottle away from the receiving space.

A storage device includes an attachment unit and a storage unit. The attachment unit includes a bracket, a support connected with a bottom end of the bracket, and a first joining member. The bracket includes at least one through-hole adapted for attachment to a bicycle by a fastener. The support includes a first pivoting portion, and the first joining member is inserted through the first pivoting portion. The storage unit includes a container adapted for storing articles and a second joining member. The container includes a second pivoting portion pivotally connected with the first pivoting portion of the support. The second joining member is inserted through the second pivoting portion and is engaged with the first joining member. The storage unit is pivotable with respect to the attachment unit about an axis extending through the first and second joining members.