I haven't looked into the links yet, but in regards to doing different meals couldn't you do basic sort of things, like say a bolegnaise/tomato style sauce and then use it for different things, liek tp put on pasta, make a shepards pie sort of meal, put onto baked potatoes, put it into some puff pastry to make savoury things...ect!
Yep, in fact to take this idea further I have a few recipes where you make a casserole base and freeze in portions, then add different things once thawed. So a chicken base makes thai green curry, chicken cacciatore and sage and mustard casserole.

what a shame DH refuses flat out to eat anything that has been cooked and then frozen
Is he home while you are preparing dinner? You could easily ambush him with a lovely, pre-cooked casserole then tell him it's been frozen once he's eaten it. For example, if you made a Moroccan lamb tagine then defrosted it and while re-heating added dried figs, fresh coriander and sprinkled slivered almonds over the top I bet he wouldn't know the difference.

As for baking, muffins and cupcakes make great snacks for kids