Addis’ Undersink storage –made famous by @MrsHinchHome and her under sink Narnia the Undersink storage unit is proving to be as popular as ever, says Addis. To be able to add a shelf where one doesn’t exist or to be able to work around pipework is something of a neat idea they say their followers love. Invisifix and storage trays are not just for the bathroom - Addis have showcased invisifix to be applied in the kitchen cupboard and around the sink area and with no drilling required is a real benefit to its followers.