I make up and freeze a lot of sauces, so all that needs doing is pasta cooking fresh and the sauce heated up. Pretty much anything in a sauce can be frozen. To freeze and re-heat and it taste nice you need a fairly high liquid content.

WRT on-line shopping. I did this. I also set up an order that was ready to process when I was overdue so I could come home, find no food, order everything with just two clicks. Well, when I was finally home with no visitors (almost a month later), I did just that and was so proud of myself. But wait a minute... I must have been craving more than I thought I was because all my favourite stuff was NOT what I was fancying. Cottage cheese with pineapple anyone?