As 2020 is about to come to an end, after trying numerous plugins, these are the ones that struck me in a positive way.
powerlevel10k 13k+★
A neat theme for zsh, with an emphasis on speed, flexibility, and out of the box experience.
zsh-autosuggestions 15k+★
Will complete commands as you write, based on your history
autojump 12k+★
A faster way to navigate your filesystem. It works by maintaining a database of the directories you use the most from the command line.