Use the typical pencil, but now you can select a pen, paint cube, eraser,...CyberLink YouPaint includes a tool to insert patterns easily and another to move objects.
It even supports touchscreens, that's perfect for Windows 7 users. Thanks to that function you will be able to draw directly with your fingers on the screen.
The progrm includes some templates, stickers and pictures to start painting on.
CyberLink YouPaint can be useful for you to draw something quickly, but the ones who will enjoy it will be the kids.
15-day trial version.