Non-statamic subfolder for testing?

Hi. I have a statamic site running on a live server at root level, and this is the only live server I have access to.

While I'm mucking around with other work I would like to have a place to test bits of html out, away from the workings of statamic, e.g., in a folder /temporary-tests/. At the moment statamic has control over everything and I don't know enough to faff with htaccess without some help.

I don't need to bother too much with security as it's not high-profile and would only be for a few minutes now and then. I do already have a local test server but sometimes I want to check things across devices and this is would help with quick and dirty tests.

Hope that makes sense and that someone can help me out. Thanks.