I want to be able to prepare everyone's dinner and breakfast at the same time, then put the pre-prepared airtight food into the fridge. I'd prefer not to faff with clingfilm, although if I can't find anything, I will use ziploc bags (I'm a little bit fussy and want it to all look smart, which is why this is my last choice!)

I've seen people using them but I can't seem to find them online for love nor money?!
I'm hoping to find covers you can purchase seperately, but I'm not adverse to buying new dog bowls with covers.

Can anyone help?

I just use ice cream cartons and tip the food into the bowls to feed.

I use chinese takeaway boxes, ice cream cartons or tuppaware type boxes.  My dogs won't eat food straight from the fridge (too chilly and no smell!) so plastic boxes that are ok to go in the microwave suit me better.  I also defrost raw food in plastic as it's more efficient.

However I found (by accident) that cheap frisbees clip onto my 8" stainless steel bowls and work a treat - I got loads of free ones from Crufts as a lot of dog companies use them for advertising.  Try your local pound shop

Chinese takeaway pots for me, use for a bit then recycle - it is also always a good excuse for another takeaway when we are running low on pots!!

I bought two cake storer tupperware things that the bowls fit into. Labeled for each dog and perfect :) Contains all manky tripe smells too, although you get a hit when you open them :D

Another one who uses Chinese takeaway catons.