I’ve been using tpope’s excellent unimpaired.vim¹ to handle toggling paste for me², but will probably switch as vim-bracketed-paste is automatic.
I only bring up unimpaired.vim as it provides a whole heap of neat mappings for other toggles you might be manually performing. Most of which follow a simple pattern that makes them easy to remember.
I don’t believe any other plugin has increased my productivity as much as unimpaired.vim. Popping up the doc to link to the YOPO note I’ve realised just how many of those next/previous bindings I use as muscle memory.
¹. https://github.com/tpope/vim-unimpaired.git
². https://github.com/tpope/vim-unimpaired/blob/master/doc/unim...