Yeah whenever you flush paricles fly everywhere with ot up so if you have uncovered toothbrushes they get a peppering of poo.

I use nginx you can have configs for different sites and have the server_name have the domain for each server block (I use a file per site) and you can either do static via a root folder, or proxy_pass for active running servers, and nginx will map the domains to the server blocks you should also have a default, and you can then have multiple domains point to the same ip address, but keep in mind that home internet often has a dynamic ip, so you may need to update it every so often. There is a service to help with the dynamic ip I think noip.com has a solution available, but feel free to look around.