A few sessions back in my regular game, our home base, a local tavern in contested gang territory got attacked by our main rivals.

We had two glyphs of warding under the floorboards loaded with spirit guardians that the barbarian and paladin fired up respectively. As they were with through a glyph, they technically weren't concentration either, and with the confined space, it was a massicare.

The DM had clearly undercountred for the defense but also that's what they can expect when they hit us in our home, so it felt good to stomp that encounter.