for the new list page for Simutrans Server I search icons
size I think 16x16, 24x24 or 32x32
- Server online
- Server offline
- map info
These are nice and free icons:
http://www.famfamfam.com/lab/icons/
http://www.iconfinder.com/browse
http://www.iconfinder.com/search/?q=map
http://www.iconfinder.com/search/?q=server
http://www.iconfinder.com/search/?q=flag
http://www.iconfinder.com/search/?q=info
Nuvola is an icon set with many resolutions... You have a good chance of finding a single icon in all sizes. All as transparent png.
http://www.icon-king.com/projects/nuvola/
http://commons.wikimedia.org/wiki/Category:Nuvola_icons