The various replies pretty much outline things to do. I would recommend the glass museums at Orrefors, Kosta Glass Works, and Pukeberg Glass Works is the center for design records of all crafts in Sweden. An excellent glass master is also working there.
Johansfors Glass Works is another interesting site as is Skruf Glass Works.
Lindshammar Glass Works is closed. Målerås Glass Works has an interesting museum with the work of the owner Mats Jonasson, a master engraver and his wall sculpture is spectacular.
The Glass Museum in Växjö is a must to see, an excellent collection of historic and contemporary art glass.
You might check the sites for Nybro, Sweden, Kosta, Sweden, Orrefors, Sweden.
If you venture to Stockholm, the Nordiska Kristall Store on Kungsgatan is a must to see contemporary glass glass from Sweden. www.nordiskakristall.com
If you have time visit the Vida Glass Museum on the island of Öland where you can see some very interesting contemporary art glass.
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