The other day I went to use seafoam through the brake booster, and when trying to get the hose off (refer to the picture), I was reminded of the Fuel Filter horrors. So with the connector off, and only the stubby, short tube exposed, I decided to go and get a regular plastic straw. At first, I tried putting one end of the straw into the tube, but that proved difficult since the vacuum would close down the straw.
So I decided to leave one end of the straw immersed in the seafoam, and then put the other end of the straw only so close the end of the tube, so that the vacuum would still suck the seafoam up, and would actually pull the seafoam through the air, and into the tube.
I found this technique really easy, and I finished up the seafoam in no time. For those who don't want to wrestle with your BB line, this is for you.
Lou
p.s. I don't know if anyone has reported doing this before, but I just wanted to share.

Sorry, here's the pic to help illustrate the point. Like most people, the connection circled in red was easy to get off, but I had more trouble with the end of the tube circled in blue.
[credit to JaTaN]

If you have a VE, the small vac hose right above the TB is even better, and easy to remove.

Well, I guess for fourth gens...