Technically not aliases but I have these in my ~/.bash_aliases so...
bind '"\e[A": history-search-backward'
bind '"\e[B": history-search-forward'
Type a few letters and press up/down arrow to scroll through matching history entries.
Also...
alias s="cd -"
It's like Alt+Tab for CLI.
Hosts are engaging, topics are interesting (to me), and I enjoy the discussions and banter.