This is what I was thinking aswell. I was actually thinking about doing a startup, a website where you can only buy Bitcoins. That's it, nothing else. Make it work INSTANTLY without any delays whatsoever, with common payment methods including Paypal (I think people can't put money in BTC's because Paypal is mostly unavailable, thats the problem I had when I first started) - Right now getting Bitcoins is a very long process that can take weeks if you take the Mt.Gox verification into account. On that website I could sell Bitcoins instantly, but maybe at a higher price than the current market situation [+5%] so I still make a profit.
I thought about maybe making a kickstarter for it or something similar but I don't know...
Likely you would have to charge much more than that as you will be flooded by chargeback scammers.