I only have a medium freezer, so I have to be a bit selective.
If I had more space, I'd fill it with bread and milk - we always seem to run out.
I have
croissants, pastry, one loaf of bread, garlic bread, crumpets, muffins.
Peas, green beans, sprouts, spinach, chopped garlic, chopped herbs, thick chips, thin chips, waffles, hash browns, butternut squash.
Mince(pork and beef), sausages, sausage meat, breaded fish, fish pie mix. Quick things like chicken goujins, veg burgers, filled pasta.
Ice cream, ice lollies, frozen raspberries.