An attachment bracket for fastening an item to a shoe that is provided with a shoestring includes a bottom part, which can be fitted on top of the set of shoestrings, and a space for receiving the item. The attachment bracket also includes a first mounting bracket and a second mounting bracket that is spaced from the first mounting bracket. The mounting brackets can be pushed under the shoestring from opposite directions. In addition, the part of the attachment bracket between the first mounting bracket and the second mounting bracket is flexible.