minecraft base walls

make a 2 high wall for minecraft base; make it using actual wall blocks; dam mit just make a big obsidian cube; how about a multi-layered self-regenerating cobble wall; WAIT make a multi-layered obsidian cube with lava and water alternating; WAIT!!!!!!!!! make a multi-layered obsidian cube with lava and water alternating, plus traps and combo locks and fancy stuff; JUST DONT BUILD A BASE