We packed up Simba's basket and switched it out for his cat carrier with his old furry mattress I made inside. He sleeps in it all the time now. I just want him to have some good memories associated with the carrier so he isn't really freaked out when we start our trip. I've yet to convince Zoe that hanging out in her carrier is a good thing but I think that as long as it's quiet and dark, she'll be happy. This combined with the kitty-downers we got from the vet should help make it all less stressful for both of them.