Check the Google map (work in progress) for coffee/lunch places, activities, antik shopping etc. in Skaraborg (and a bit beyond). Let me know if you think places should be added here.
One of the best sites (and an example of pre-historic webdesign) to check activities like swimming, hiking and canoeing in Skaraborg is http://www.skaraborgsleder.se
Another site, equally old-style, is http://www.badkartan.se/ that lists (and reviews) lake and sea beaches / access points all over Sweden.
Some other (fairly random) links: