Stamp collection activity plugin by David Mudrak is a very popular plugin in the Moodle plugins database which allows a teacher to give “stamps” (i.e. picture with a comment, similar concept to badges) to students so they collect these stamps. The activity can be used in many ways, such as motivative bonus marks, absence marks, certification records etc.
In the recent update to the Stamp collection activity a new button is added in the activity named Toggle stamp display mode button that allows to display stamps together with their text comments alongwith a validation check for the text maximum length (255 characters) when giving a stamp.
You can download the latest version of the Stamp collection activity module from this link: https://moodle.org/plugins/view/mod_stampcoll