Apparatuses and methods are provided herein useful to open and discharge the contents of a packet or sachet. In some embodiments, a portable dispensing device includes a housing, an opening mechanism, and a discharging mechanism. In some configurations, the device includes a rotatable axle, a rotatable cap disposed at an end of the housing, and a roller element (coupled to the axle) that is configured to rotate with manual rotation of the rotatable cap, and a slot in the housing that permits at least a portion of the packet to advance through, wherein the slot and housing assists with pressing opposing packet walls together to discharge the contents of the packet. In some configurations, the opening mechanism also includes another housing slot where a corner of the packet may be fed and a knife element disposed to facilitate removal of the corner to thereby open the packet.