Cheap and fast monostable circuit w/ T-Flip-Flop in 1.11 (New design, probably) - Redstone Creations - Redstone Discussion and Mechanisms - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
Minecraft 101
Minecraft Bedrock T-Flip-Flop toggle 2*2*4 (Also works on Java) - Album on Imgur
Swap Levers with Sophisticated "T Flip-Flop" Buttons in This Saturday's Minecraft Workshop « Minecraft :: WonderHowTo
Compact and resource friendly T-FlipFlop Minecraft Map