You could attach an external drive to a slim laptop or low-power PC like a Pi, only accessible by yourself, and technically you’ve got a media server!

You can host things from a virtual machine on your main computer, with a chunky external drive attached, if you wanted. :) That’s the fun part, you can start from the bottom and expand as your knowledge and space allow!

You could also run services from a paid hosting server, but I don’t think the returns would be great for packing tons of data on there. :p