found it, thanx community !

Okay, there's a box named "Misc. Mocap animations" at Wright Plaza in Key Gruin's shop The Hodgepodge, upstairs from Elif Kling's shop. It does contain two sweeping animations, but they seem rather hectic and not too well looped.

I might have one, but I'll have to check where I've found it.

Otherwise, there's an animation shop at Needful Things that might have what you're looking for.

@TaintedAngel is looking for an elf or a npc that shovels snow for a Christmas world. You two should connect in case either finds a good animation.