These handy whole-body relaxation cards are a great way to encourage and remind your students (and you) to take a moment and relax! Helping your students relax can be a great classroom management tool and it teaches them about the importance of self-care.
Print the large version out as a poster; it would work especially well in a calming corner. The smaller ones can be laminated and kept in pencil cases or agendas!
My Getting into the Green Zone: Self Regulation Poster Set
is a great companion resource for these cards.