Suggestions for any binds or toggle binds?

I'm looking to make some creative binds for GMod now they cant be to crazy because you are limited to the things that Valve allows you to do on GMod unlike Tf2 and CSGO. But go ahead and post your ideas that of things you think would be cool to do .

Also I'm messing around with building my own HUD so if you see me in spectate and I dont respond to you then I may be afk or alt tabbed writing the code.