You'll get a plug at any pet shop Smow. Like you I had two 5-6 week old kittens many moons ago, a boy and a girl. Boy got run over and killed at 10 years old and the girl lived to be over 20 and liver and kidney failure did for her. The only way I ever managed to get a cat into a crate to go to the vet was to quietly get the crate and leave it open on the bed when she wasn't around, perhaps 2 hours before needing to go out. Then I would pick her up and stroke her over my shoulder so she was looking behind and not where we were going. Before she knew it she was being put in the crate backwards without having seen it was there. Crafty eh?