Is your IKEA GLADOM table a couple inches too short?  Is your robotic vacuum getting stuck under it?  Not anymore.  The wider coned base also helps with tipping for added stability.

Print four of these and throw them on.  If you have a kid/pet who loves standing on furniture, I recommend at least 50% in-fill.  No supports needed since it has no overlap.

If you find these don't fit snug, a tiny piece of electrical tape will ensure they don't fall off when you flip it.  Put a small piece (0.5-1") on the leg itself, jam this on, and it shouldn't come off.