How can I use raspberry pi hdmi display for HA / Photo Slideshow?

Here’s my hardware:

Raspberry Pi 4 / 13" HDMI display

I want to ‘replace’ my aging digital photo frame with something smarter. My goals are:

  • Primary use as a digital photo frame
  • Optionally display info from HA (weather / sensor data / graphs)

What are my options for that? I looked at dynaframe, but it hasn’t been updated in 3 years since the developer took it ‘paid’ (patreon). Are there any other options out there? Would it be possible to display a kiosk dashboard of some kind?