1-2 second thinking animation loop with 3D Model -- 2

I want you to give me a animation loop of 1-2 seconds from a 3D model of a character. The model and its face need to be rigged. What you have to do is get him do an animation loop where it feels as if the character is thinking hard while rubbing his chin and something like that (Gif of a reference attached, but it is not necessary to follow). Be creative and make a loop animation.