More Interesting Gags

So we recently tried out the Bondage Boutique Bit Gag and it was pretty good! (No pony play though, not really into it)

However I'm now thinking we could try some new ideas; I've been looking around the web for interesting gag games and such, and stumbled across this:

How devious... the more they try to speak, the wider it opens! I don't know if I'd ever use anything like it but it's a very kinky idea.

Anyone got any similar finds or any interesting ideas of stuff to do with gags? :)

This is next on my list of purchases, looks like excellent fun!

i think this looks fun.....or sadistic....can't decide which..

Fetish Fantasy Latex Rubber Inflatable Ball Gag