Mrs T - Thank you for your help. Here is my end-of-day report.
Birthday/Christmas cards - I have kept the last ones I received from my husband and Mum, plus some special Birthday and Valentine's Day cards. The rest will be re-cycled.
Memorabilia - I am going to buy some pretty boxes at the weekend and keep everything in one place (NOT in shoe boxes under the bed and in drawers and cupboards in different rooms.) Love your idea of scrapbooks at some stage.
Books - these are already well-cared for and have a proper home on their shelves and bookcases.
It has been a good and productive day and I am looking forward to arranging everything back in the freshly painted study tomorrow.
Phew. Long soak in bath and large glass of wine now. Cheers! Think I may now be a fully-fledged twiddletigger. (Don't think I want to try saying that after a glass of wine) By the way, how is Happytigger?