Best price I've seen for these.
These plugs connect to your home network via wi-fi, and can be controlled by the TP-Link Kasa app, or through Google Assistant or Alexa.
You can setup timers for them or, if you also have a Kasa camera on your network, make it so they activate whenever movement is detected.
This particular model is also able to monitor the energy consumption of the attached device(s), and will keep a running tally for a month.
These are only available in-store, so check stock levels first if you're interested in buying one.