ALDI are doing sets of blades, sanding plate for their multi-tool saw - the one that can trim the bottom doors, skirting boards etc..
They're supposed to fit other makes such as Workzone, Bosch, Makita,
It also includes a 'blade' for cutting tiles and de-grouting.
Afraid I can't find a piccy.
Found these in Stockport but it might be a national deal.