"World's Best Nan" Fridge Magnet. A Unique, Original Gift Idea from Yummy Grandmummy. Would make an original Birthday or Mothers' Day Gift Idea for less than the cost of some cards! Don't forget Nan on Christmas Day! Buy just two or more magnets, key rings or coasters from Yummy Grandmummy and receive a 20% discount on each. Size: 77mm x 51mm Crystal Clear Acrylic Plastic An original gift for Nans, which for less than the cost of a card and will be on display for a lot longer!