I also have some aliases. Here are my favorites:
# Simply reload your bash configs to source changes or to update $PATH
alias reload='clear; source ~/.zshrc'
# Is the internet down? Simply check with a ping
alias dping='ping duckduckgo.com'
# What's the weather in Berlin?
alias wetter='curl -4 wttr.in/Berlin'
alias wttr='curl -s wttr.in/Berlin | head -7 | tail -5'
# Save some letters ;)
alias g='git'