I'm a zsh user, but here's a couple of things I find pretty invaluable:-

    bindkey '^Q' push-line

The 'push-line' widget allows you to quickly type another command and will restore the previous one once you've entered it.

    # re-run the previous command with sudo
    rerun-with-sudo () {
      LBUFFER="sudo !!"
      zle accept-line
    }
    zle -N rerun-with-sudo
    bindkey '^Xx' rerun-with-sudo

Re-run the previous command prefixed with sudo by typing ^X then x.

And:-

    # build git clone command from clipboard
    git-clone-clipboard() {
        REPO_URL="$($CLIPBOARD)"
        REPO_BASE_NAME=${$(basename $REPO_URL)%.git}
        LBUFFER="nocorrect git clone $REPO_URL $REPO_BASE_NAME"
    }
    zle -N git-clone-clipboard
    bindkey "^Xg" git-clone-clipboard

^Xg prefixes a git url with "git clone" and fills out the command line.

Couple similar things for wget, youtube-dl here: https://github.com/gaving/dotfiles/blob/master/.zsh/config