Abstract: Disclosed herein are devices and systems for counting medication. In an aspect, the device can include a collapsible container assembly, the assembly comprising: a sheet comprising a plurality of predetermined fold lines, the plurality of predetermined fold lines configured to flex along the fold lines; wherein at least a portion of the sheet is configured to be folded along at least a portion of the fold lines into at least one predetermined shape having a predetermined volume; wherein the container assembly in a folded state is configured to releasably couple or engage a grid for collecting medication; and a grid comprising a plurality of openings, each opening configured to collect a unit of medication having a predetermined size and/or shape. Also disclosed herein are methods of using the disclosed counting devices and systems.