Let's create a VCI that starts an animation when grabbed using onGrab(target),
and stops the animation when ungrabbed using onUngrab(target).

Example data:
https://seed.online/items/546192bcc54c09c25d329f6d3cf5047fce7a5e8bb844b8fa4811863e7430224f

Each objects are configured as shown below:

We need an animation that turns the fan, so let's create one.
Select the root VCI Object (The GameObject with VCI Object component attached). Open the [Animation] tab and select [Create] to create an animation clip.

There are several important settings when creating an animation.
The animation won't work if you forget these settings so be sure to configure them.

Components for each object are as shown below.
We don't add anything to the fan and the base.

main.lua

function onGrab(target)--When grabbed
    vci.assets._ALL_PlayAnimationFromName("fan_rotate_anm",true)--Specifying true will loop the animation
end
 
function onUngrab(target)--When the hand is released
    vci.assets._ALL_StopAnimation()--Stops an animation
end