Many times I want my computer to interface old hardware. Such as radio, light switch, etc. This mostly involves pushing pressing and moving various buttons and switches.

I don't want to buy new hardware I want my computer to interface the old hardware I already have.

I thought about it and reached to the conclusion that what I need is a general purpose button-pusher hardware.

I need a simple device I can interface by a computer and would be able to push most of the buttons we have in daily accessories, without damaging the button.

Is there any such accessory availible?