A runtime transform gizmo similar to unitys editor so you can translate (move, rotate, scale) objects at runtime. - HiddenMonk/Unity3DRuntimeTransformGizmo ...

URP Render Feature to do full-screen transition effects, like iris-wipes. - hunterdyar/Unity-Transition-Effects ...

Although these can be fun and functional for families, a touch screen isn't 100% necessary for everyone, especially if you plan to use the all-in-one like a traditional computer.