Why not make your mum a memories box including personal bible quotes for Mothering Sunday.
All you have to do is find an empty box (shoe box) or a gift bag or envelop, decorate it either by colouring, painting or sticking pretty paper on it but make it as colourful as possible and look up Bible scripture for your mum.
There are a few examples below:
You are loved forever
Romans 8:38-39
Honor her for all that her hands have done, and let her works bring her praise at the city gates.
Proverbs 31:31
God bless Mothers
Philippians 4:19
There are many good women but you are the best
Proverbs 31:28-30