Phrases with «variation on something»

I've been doing variations on it for the past few weeks, using whatever compatible bits I can find in my pantry. (thehealthyfoodie.com)
The principal actors are all well within their comfort zones, as one would hope given that they're playing variations on themselves. (theatlantic.com)
I have tried so many variations on it over the years but these are the basics that just keep working! (amodernhousewife.com)
(see all sentences)