Slot and tab

 My slot and tab experiments have developed into this.

I painted the papers dark blues, greens and purples on one side and put the complementary colour on the reverse.

It folds up reasonably well if you know the order to do it in.

Whilst I was making it I had an idea  for a book. But I'll need to alter the colour scheme and make the folding more intuitive.

 

While I mull over the words the book needs I think I'll take a break and play with puppets.