There are many relaxing herbal teas that would be great after meditation.
Try any of these by steeping in boiling water:
Green tea (has a bit of caffeine, or you can choose decaffeinated green tea)
White tea (also has a bit of caffeine, or you can choose decaffeinated white tea)
Peppermint tea (or steep fresh peppermint leaves)
Ginger tea (or steep slices of real ginger)