We also have the Canon PIXMA IP-100. It is small and we fit it into a laptop case to protect it while traveling. It must be connected by USB to the computer. It is full color (two cartridge system - black and color) and will print a regular 8.5x11 sheet of paper (or smaller or larger up to legal size). We use it for business while on the road. It can be used for photos also. It has good print quality. It is very rugged and made for travel. This is much better than dealing with an all in one that is much larger and you have to deal with remembering if the scanner head has been locked down for travel.
As to clogged heads. We pull it out every few months and print a test page to keep the ink flowing if we have not used it in that time. Cartridges last us a very long time.