Here’s one I can spend days with.
It’s Popular Mechanics magazine that is on Google Books.
It has every issue from the very first one up through the current issue.
You can browse by year and month. It’s totally FREE.
https://books.google.com/books/about/Popular_Mechanics.html?id=RdMDAAAAMBAJ
The old issues have some of the neatest gadget and toy, well, very neat plans well illustrated.
Growing up I subscribed to Popular Mechanics, Popular Science, Flying Magazine and Boy’s Life while in Scouts. Sometimes I had Field and Stream magazine.