Yes, essentially a test website would be your best bet if you're not a programmer yourself. Or you can set forums with a display of 0 and work on there.
I'm trying to find a way to easily create a plugin that disables products via a conditional. So far the only solution I can find is editing includes/class_hook.php and altering the query around the following code:
PHP Code:
while ($plugin = $dbobject->fetch_array($plugins))
{
But even if i paste a code for you to alter this, it will require editing this file of course. Will look for another easy solution which only involves a product upload. Otherwise, hope these tips help.
Will keep you posted with other options and see if i find an alternative to file-editing. However, like i said... you have plenty of options here as far as working "behind the scenes".