What are some of your must-have Neovim customizations?

I’ve been a relatively hard-core user of Emacs for a long time now. Recently, I’ve been playing with Neovim due to the great integration that it has with NixOS and for the performance/usability benefits that I perceive it to have in the terminal. I’ve been loving it thus far, but from my experience curating my Emacs configuration over 10 years, I know that there is probably a ton that I don’t know about that could be making things even better than they already are. Most of what i’ve been able to find online is blogspam, and I’m sure that there are many people in this community with curated configurations of their own who could teach me a thing or two.

I’m interested in plugins, “stock” configuration changes that provide QOL benefits, or anything else that has improved your experience with the editor. Here’s a list of what I already have installed and configured:

{ pkgs, ...}: with pkgs.vimPlugins; rec {
  plugins = [
    autoclose-nvim
    copilot-vim
    vim-fugitive
    lualine-nvim
    melange-nvim
    nvim-lspconfig
    readline-vim
    rustaceanvim
    telescope-nvim
    vim-easymotion
    vim-wordmotion
    which-key-nvim

    cmp-nvim-lsp
    cmp-buffer
    cmp-path
    cmp-cmdline
    nvim-cmp
    cmp-vsnip
    vim-vsnip
  ];
}

In case it helps, here are my Emacs config and Neovim flake.