2_3 B+K, 3A+B,B tech traps in all directions.
CH 4K, 3A+B, B (slightly charged/timing really stict) tech-traps also in every direction.
44B+K_3A+B, 3A+B,B (slightly charged/timing really stict) tech-traps in every direction, too.
I'm sure everbody knows this already, but 22B BE, BT 2B+K tech-treps in every direction except for one (either left or right; not sure though ^^'); just wanted to share this idea: The remaining techable direction can be tech-traped with BT 2A. I usually buffer CS during the BE animation, do BT 2A and hit B+G.Can be mixed up with CE/A+G/SS or a WR/RCC mid.
Wall combos with 3B start-up:
3B w!, 2A+B, 6B8
3B w!, 2A+B, 6B8 BE, 7B+K, 6B8
3B w! 2A+B, 6B8 BE, 66B BE, 6B8
3B w! 2A+B, 6B8 BE, 3B+K, 3B+K
Some other stuff I randomly found out
44 (A+B) w!, bK
CH 4K w!, bK
66K w!, 2A+B...
Edit: sry, my bad ^^'. BT 2B+K only catches back tech after 22B BE