An attachment device for attaching to a user's finger, thumb, hand, or wrist is provided. The attachment device may also be configured to support an object, such as a small electronic tool. According to one implementation, an attachment device comprises a mounting frame, a side wall extending at an angle from the mounting frame, an outer C-band extending from an end of the side wall, and an inner C-band extending from the mounting frame. The outer C-band is configured to at least partially surround the inner C-band.