As others have said - don't do it if you're going to be hurting standing at the cooker! But if you're happy to, then definitely I'd recommend:
Mince - you can make the base for both bolognese and chilli with pretty much the same ingredients - just split out some for bolognese while it's plain tomatoey-herby, and add in kidney beans/spices to the rest to make a basic (though completely un-authentic!) chilli.
Roast chicken - I have made soups with this in the past, so if you roast one to have for Sunday lunch, use the leftover bones for stock, and meat for soup. It's a bit fiddly to strip the meat away but once done it's a case of popping the bones in a big pan with onion/carrot/bit of white wine etc to create the stock. Feel free to PM me for the proper recipe if it's of interest!
Frozen pastry - puff pastry or whatever takes your fancy. Easy to then make pastry bakes if you have a bit of whatever you want to throw in - I top mine with cheese/ham/pesto/onion and it's really quick to shove in the oven for 15 mins or so.
Ready made pies, so all you have to do is add some veggies - frozen peas or whatever, especially in this cold weather!
The only thing I'd recommend not freezing is pasta! I have a spicy salmon pasta dish I make quite a bit, and tried to work out why my leftovers were a bit rubbery. It was because I was freezing the cooked pasta to reheat too - it just doesn't work!