The one I use the most that replicates being notified for something being left open, on, running, or unlocked too long is a parent/child smartapp: (you’ll want all of these)
If you do not want all that for some reason, then just use the Left it Open child smartapp and remove line 24 and change line 19 to a name you want, then save and publish.
RBoy
(www.rboyapps.com - Making SmartThings Easy!)
3
If you have access to rboys apps, this app does exactly that. Single or repeat notifications with customizable intervals, announce it on Alexa, Sonos or Bose, customize the notifications and much more.