The model of the inside of a pylon of a Norwegian oil rig in the North Sea (seen in the Petrol Museum in Stavanger). The pylons of these rigs are enormous, and it's totally fascinating what's inside.
(Sorry for the blurry shot, but I had to take the pics without flash to avoid reflection. )
Viking grave finds in the Archology Museum at Stavanger. The coins are all Roman and weren't used as currency as we know it, but simply for their weight and worth in gold.
This was my favourite:
An iron frying pan, from one of the Viking ship excavations which are exhibited a the Viking Ship Museum at Oslo.