Some Lack Hacks that are installed in between the tabletop and the legs - No extra hardware required! 

Adds 1.5mm in leg length, so I've included a spacer allowing your to add accessories to only one corner, without having a wobbly table at the end of your project!

Print in vase mode, with enough infill that the bottom layer is solid.

I used a full 1.0mm nozzle, which allows for nice sturdy print walls, and super fast print speed as a bonus.

PETG or other resilient material is preferred.