A self-closing utility bag for holding small articles includes a pouch with an upper pouch portion, a lower pouch portion, a neck portion between the upper and lower pouch portions, a top opening that is maintained in a partially open orientation, and a self-closing mechanism. The self-closing mechanism includes a first resilient strip disposed parallel to a pouch top opening at a location either adjacent the neck portion in the upper pouch portion but spaced from the pouch top opening or at the neck portion, and a second resilient strip disposed opposite the first resilient strip where the first and second resilient strips maintain the pouch in a closed orientation but having a resilient spring action that allows intruding access to an inside of the lower portion while returning to the closed orientation when the intruding access is removed.