Hydration bladder slosh stopper

Sometimes I like to get off the bike and attempt to trail run. I find using my regular hydration pack leads to a lot of annoying sloshing/noise. Thinking about prototyping/3D printing something to slide in the bladder that has multiple open ended channels or a sort of maze shape-essentially transiently trapping the water in multiple potential compartments to minimize the slosh. Has anyone ever done something like this or seen a commercially available one?