There are other possibilities. such as: (1) When you have finished a project, you can write a final project report blog that links up all the old blogs, with a contents, body, and appendices page, (2) save the report blog to pinterest or pateron, ...

Exactly... Maybe I will create a page with internal links pointing to posts and place a button on the home page to it... as some navigation... Only, the "project" will never finish...

I am not sure if you understood my great idea to regularly place next my (old, present or future) material and to tell in the intro how it was born, how it was accepted, what was its fate, etc.