I think I will stick to my paint strip tester things. Simple, efficient and no extra stuff. You can scribble on them or tear them up if you need more bookmarks.
https://reviewed-com-res.cloudinary.com/image/fetch/s--gRUAi8DC--/b_white,c_limit,cs_srgb,f_auto,fl_progressive.strip_profile,g_center,q_auto,w_1200/https://reviewed-production.s3.amazonaws.com/1520453467000/GettyImages-fan-deck.jpg

Oh, absolutely. I'll stick to the stack of used tickets, postcards, receipts etc. sitting ready at hand on my bedside table ...

I have a stash of bookmarks that came with book depository orders...

Those are part of my stack, too.