can be printed with no supports

has bolt holes (for nut & bolt). would recommend using some sort of sealant/adhesive to seal the joint.

fit on the bucket & lid, trace the cutouts and bolt holes, clear them out, fasten together. cut a hole in another bucket lid to drop the upper bucket into, and attach some poorly made stops to keep the bucket from sinking too far in. I found that this didn't need to be a perfect seal to be more than effective enough.