This little tin contains everything you need for impromptu practice. Red kongs are already really convenient and this little tin is so easy to take and use anywhere.
Lovely set, however the 3d printed lids could have been designed to allow the original lids to fit over and the printed lids fit so tightly to the thin walled tins that it is very easy to bend them with the force required to open them up. These really are nitpicks though for a thoroughly excellent kit that is already serving me well!