A few months ago I received free copies of Axialis Software’s IconWorkshop and CursorWorkshop products. Today they contacted me to ask if I could highlight their ‘Spring Sale’, which I’m quite happy to do as I’ve found them very handy and easy to use tools.
You might be wondering if this has any relevance for Visio, but they also have some free icon packs including .png and .gif images, which can of course be used in Visio documents as straight shapes, or in data graphics (check out this msdn article: Building Custom Data Graphics for Visio 2007).