How can I doctor up Pizza Rolls and other prepackaged food?

I was cleaning out my freezer when I dug out a forgotten bag of Pizza Rolls from a couple years back. That got me to thinking about how they could be improved from the box directions using other ingredients or higher-effort techniques. Run them under the broiler at the end for a better crisp? Maybe top with sambal and sliced green onion and serve it with sour cream?

I couldn't remember any discussions on here about this topic, so I bring it to the community: how can I add ingredients or change techniques to improve prepackaged food like pizza rolls, hot pockets, boxed cake mix (I know that's a common one), fish sticks, ect?