Translation:The museum collects various objects.
I like the concept of a museumpje. I've been to many of them in small towns, where the town provides a space, a volunteer or two does the "curating" (such as it is) and the people of the town provide the collections. A cute little museum is a perfect description for those.
Well.. perhaps as a term of endearment.. The cute little museum around the corner, het schattige museumpje om de hoek.
Well, the one in OudeWater is a museumpje for sure. My goodness... Takes like 3 minutes to see it all.