My DS (2.4 months) is obsessed with fans. Especially ceiling fans. He pesters me every day to go to our local museums and shops that have ceiling fans just so he can watch them. Lately he spends most of his play time at home spinning things (toys, socks, blankets - anything!) round and round pretending they are a fan. He also loves washing machines and drains, but not as much as fans. Should I be worried about this? Have your children had any strange interests?