DD is 5 and didn't go to daycare or nursery. She starts school in August. She has 2 loveys. In the beginning it was one for my house and one for Dada's house, but then she began carting both of them about with her. Until she was 4 she was allowed to take them everywhere she wanted. I kind of thought about restricting them to the house when she was 4, but was about to have a baby and wasn't very strict about it. We had a few minor losses (dropped and immediately or almost immediately recovered). One day last summer her favourite lovey (that's him in my avatar at a wedding!) got left in a park....and found by someone else. A poster campaign and a cash reward (!) got him safely home again the next evening, but from that day forwards the rules are:
1. they stay at home unless we're going to drop her at her dad's before coming home again (like on a saturday morning, we're often out all day doing fun stuff then drop her at his on our way home).
2. if we are going to take her to dada's before coming home again they can come but must stay in the car.
She sucks her thumb with them (which i don't mind at all) and for a while she ONLY sucked her thumb with them, but now they rarely come out with her i notice she's begun sucking her thumb without them.