I am not sure what the point of this is? The only way it would make sense is if you have for example:
your-site.com/laptops
your-site.com/desktops
your-site.com/monitors
your-site.com/keyboards
then you need to have a domain that has a good backlink profile in each of these categories. It cannot be semi related, it has to be 1:1 exactly related, then you 301 these domains to their respective categories. A high number of 301s can also land you into trouble.
Either build categories on your site, or run each site as a microniche. The first option will require less $, because you are pumping up one domain with juicy links and adding a ton of content, so you're getting the benefits throughout your categories (make sure the categories are extremely related to get this benefit)
The microniche route is a lot more work, it's like running 10 different sites, so you have to now prep 10 domains and spend $ for each of those domains, but it can be more rewarding in the sense that your risk through google algorithm changes and other penalties is now divided by 10.