Have Physical Access, Need to Leave Doors Open

there is this computer that I have physical access to. it runs windows 7, has firewall and AV.

I am looking to leave a door open, so that i can later remotely have access, mainly take screenshots or if possible watch screen realtime.

questions are -

How would you go about this?

What's fastest/most fool proof way to deliver payload? (are rubber duckies found by AVs?)

what kind of programs would I need to be able to see screencaptures (real time or close to it)?

thanks a lot for the help