Hold the mouse down
Everything lifts toward your cursor and then starts circling it. Not a straight pull, a slow orbit, so blocks swing past and come back round rather than piling on top of your pointer. His ears fold flat while he is working.
Release and it all falls at once from wherever it happened to be in the loop, which is usually a mess. That is the fun bit.
The orbit is the trick
A straight pull looks like a magnet and gets boring in about four seconds. Adding a sideways component turns it into something you can steer: move the cursor while holding and the whole ring of debris comes with you, lagging slightly behind.
Where he came from
Searching the character in late 2020 put him at the side of the results, and clicking made the page shake and lift. It ran with the second season of the show. Baby Yoda worked as a search term too, since both names pointed at the same little green thing.
These tie-ins have a shelf life. Thanos snap lasted weeks. What sticks around are the physics pages nobody has to license, like google gravity.
Nothing happens when I search it
Then it is not running this month. Character effects rotate with releases and there is no way to force one back on.