Johann Prescher, maker of this video in the Netherlands, writes about it (translated):
October 20th 2014
Special guest in the Mostela that I had prepared in Veenwouden. A hedgehog was able to crawl through the 8cm diameter tube. The Mostela is an invention for the identification of small mustelids (Mustelidae) named after the inventor Jeroen Mos. I have provided the Mostela with an attractant which attracts the animals. Looks like it was well worth the effort for the hedgehog as well, as it crawled into the Mostela.
And this mini-hedgehog just realized it can fit in a Starbucks cup.