I made up two Nucs for a friend last week and introduced queens into them for him using his preferred "hair curlers", one pink, one blue. In this instance, the colour is important. He had prepped these by plugging one end with fondant and a single layer of fine, wax proof paper (the stuff used on top of jam jars). When I added the queens, the other end was plugged with a small cork and the hair curlers were hung between frames in the nucs, ready for the queens to be released by the workers. He checked the two nucs on Saturday and whilst one queen was released OK, the other was still in the hair curler. He discovered that the fondant had been eaten but the queen could not get out of the hair curler ..... there was a small plastic ball in the middle of the hair curler preventing her exit. Apparently the presence of this is normal with this brand of blue hair curlers. The pink ones do not have balls. (Unintentional humour??) When he bought these hair curlers last year, he had noted that these blue balls were present and had wondered if they would make good stoppers..... clearly they do. Its a pity I didn't spot the ball when I put the queen into the blue hair curler and he didn't spot it when he had prepped the two hair curlers!
He released the queen and she promptly did a circuit around his head. I checked the nuc last night and unfortunatley the new queen wasn't home and the workers had drawn out some emergency QCs. I broke them down and united this nuc onto the other Q+ nuc. He will move them into a full hive this weekend.