A small amount of plaster - about the size of a bag of sugar (Clive Vale TN35)

Does anyone have a little leftover plaster from a recent plastering job? It can be either finishing or base coat as it’s just to fill in a deepish channel caused by a recent repair to sitting room wall. I only need about the size of a bag of sugar or maybe even less. I’d buy a full bag but would then be left with 90% waste so thought it worth checking to see if anyone has a bit left over they no longer need.