Openbox basics: sudo pacman -S openbox tint2 obconf obmenu-generator
Install picon-ibhagwan from the AUR if you are autistic (blurring and rounded corners)
Installing pcmanfm will provide shortcuts, dunst will add support for notifications
After installing all of the required packages, create a file in ~/.config/openboxcalled autostart.sh containing the following:
pcmanfm --desktop &
tint2 &
picom --config ~/.config/picom/picom.conf &
dunst
Make sure to run obmenu-generator -p to re-generate the right-click menu of Openbox