Sorry for taking so long between posts but with the holidays it didn't seem like I had much time to post anything. Today I'll talk about using stuff you can find around the house to help out with your camera.
External flashes are expensive. Or, I should say they can be as I just ordered a Sunpak 383 from B&H photo for $100 with shipping, so it's not too bad compared to say the Pentax AF540 which retails for $339 US + shipping.
In the meantime I found this link for the "Finn Bounce": http://www.prime-junta.net/pont/How_to/hc_Bounce_Built-In_Flash/a_Bounce_the_Pop-up.html?page=3
It's a cheap way to give your pop-up flash an expensive bounce flash look. Bouncing your flash gives a more natural and more evenly distributed light. I was a bit skeptical of the Finn Bounce at first until I tried it. It does work. Here is a sample of a shot taken with the first one I made. I've added a shot with the direct flash as a comparison:

Noticeable huh? This shot was taken in the daytime, but it was overcast. This shot was taken with my super deluxe Finnbounce with only a bed lamp offering illumination:

I think it's a nice look considering I'm using a shiny piece of cardboard. I recycled a part of a gift box to make the Super Deluxe Finnbounce as it was much more reflective than covering a piece of cardboard with foil. Here is the SD bounce on my camera:

Just to let you know, you will need to increase your flash power and up your ISO to get a good result as pop up flashes are nowhere near as powerful as a proper external flash. With the K10D I have the flash set to + 1.0 EV and ISO at 800. In moderate light I'll typically underexpose by 1/2 to 2/3rds of a stop to get a decent exposure. The other thing to remember is the height of the ceiling. Anything 12' and higher and you're not going to get as good a result as say an 8 foot ceiling. Different coloured ceilings will also given different colour casts, so white is your best option.
I'd highly recommend checking out the link above to get the general dimensions of the Finnbounce and trying it out.