Apparently all you want is to turn them on
and off, right?

You can get a pre-pack with three individually
switched outlets plus two remotes for, more
or less, $25.

That sounds like a good option although my setup was about half that.
Any example links will be appreciated.

Best option is to go to a good harware store, or one of
the Big Box places.

I'm thinking that this might be along the line of what you're referring
to at Menard's. If the remote control battery lasts long enough then it
looks like a good solution at $14.99. Don't like the thought of having
to dump my all current setup though.
https://bit.ly/2BqNItU