Logotype Maker is a free web tool that you can use for making logos for printing, web pages, videos, etc. It is very easy to use, you enter some text and it randomly generates some logos. If you don’t like the ones you see hit the refresh button and you get some more. If you select the settings button (the cogs icon) for a particular logo you can then edit it by changing the colour, text, font and image. You can even upload your own image for use. Once finished you can bookmark it or save it as a png, pdf or a zipped file.
Here’s one I made earlier!