halcyon fossil
WIth the google photo integration going. well Stupid (and im going to move off the cloud anyway) I made a local random image persenter. in a php script.
Put it in a (locally only) webserver. and point to your images.
WIth a post command curl -X POST http://myhappyserver/local/photo.php the current photo is blocked and never shown again.
you can create a camera using the image as still image. and create an action (hold forexample) to run the post command in a shell command