My favorite and least useful thing I have set up on my laptop is to run
fortune | ponysay when I open a new bash session.
In my .bashrc file I have the following snipped:
if [ -x /usr/local/bin/ponysay -a -x /usr/local/bin/fortune ]; then fortune | ponysay fi
If you want one script to install everything for you:
#!/bin/bash echo 'Installing homebrew' /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" echo 'Installing fortune and ponysay brew install fortune ponysay echo "if [ -x /usr/local/bin/ponysay -a -x /usr/local/bin/fortune ]; then\n fortune | ponysay\n fi\n" >> ~/.bashrc