One of my M.E. friends bought a pedometer to measure her walking distance over the day. It was a tiny thing that clipped on her belt. She said you clock up a great distance doing little chores, even just round the house, and you don't realise you do a lot more some days than others. I suppose over time you could train yourself to regularise, to avoid overdoing it without realising.
A milk Tray room divider...?? What a shame I missed that!!!! It reminds me of a scary TV programme in Italy where a woman shows you how to fill your house with rubbish. One time I saw it, she made a large lampshade out of old biro pens. Another time she made a doormat by laboriously wiring together about 500 plastic bottle tops. And the worst of all time was a "bookcase" made of those rough wooden crates that greengrocers get their fruit in. You'd get splinters under your nails just from looking at it. People watch the show simpy to marvel at the jaw-droppingly awful stuff she comes up with.
By the way I still have a pattern book of lace doilies from the 1970s, that my grandmother gave me. I think it's time to get crotcheting...