Do these products have any validity? I am despreate to improve my mpg with gas now OVER 3 bones a gallon. i live in san francisco where everywhere you go is stop-and-go and bumper-to-bumper.

I read a thread on here that basically said the Turbonator is a waste of money, that it is just subconscious with no real gains.

I have looked for a "commuter box" but cannot find one online anywhere. Does this exist?

The Ionizer:
http://store.yahoo.com/engineionizer-store/

Turbonator:
http://www.turbonator.com/index.html?id=adWordsMileage2

What else can be done to improve gas mileage besides driving safely?

 

The turbonator will do you nothing and is a complete rip. There are many threads dedicated to discussing the validity of it as a product and as a forum conclusion is that it's garbage and people shouldn't buy it.The ionizer is a new one in my book, so I can't comment on it. However, I doubt it gives you anything significant. Hondas get great mileage as is. They were designed to get the most they could out of a gallon while still remaining a standard combustion engine.
Some things to improve your mileage would be to shift at 3000 rpm-ish as much as possible. DO NOT sacrifice rpms for a couple pennies though when you seriously need to get up to speed like on freeways. Don't use your air conditioning. Roll down the windows instead. If you're really feeling ambitious you could even remove your air conditioning system. That's on my agenda this summer. Get some HX rims. Those things are ridiculously light at 11 or 12 pounds I think and have minimum surface contact with the road. Wide rims create more friction and slow you down faster. Those are my ideas on how to get better gas mileage.
If you're trying to save money though, just remember the car has only been around for a century and people have been walking for eons before that. Bikes are cool too.

 

There are other things, performance-wise. More free-flowing exhaust should up the gas mileage a bit, as long as you can keep you're foot off the gas after hearing how sweet it sounds More efficient cooling fans are a good power-robber also and can free up some hp and mileage. Just doing normal tune-up things also helps, like spark plugs and air filter.

But yeah, most of all would be the lack of A/C usage and not punching the gas. Although at WOT, even if you shift below 3k will use as much gas as if you are at WOT above 3k.