No you are being practical and especially if it means the safety of the other children. To wean kids from blankies, soothers etc they are an on the couch activity only. If they want to get down to play they must leave it behind. Otherwise they are free to sit there all day and cuddle blankie or suck to their heart's content but they are not allowed to do both.

For soother I have done a dish in the kitchen they put it in and then if they feel the need to have it they can go get it and sit at the little table in the kitchen and enjoy it, then put it back in dish and come play. Also reinforces that the only things that go in the mouth are food and we only eat in the kitchen in a way.

Try tying the blankie onto the child so it can't be dropped or clipping on the soother to a clip. If she is dropping it then she is also showing signs that she is getting ready to separate from it. There comes a time when it is important for a child to be content in themselves and not relying on extraneous things like a blankie for comfort. Give her a large sandpail with handle to put it in so she can carry it around with her - one step removed from actually carrying it - still with her but not physically touching it. At least when she puts the pail down it is less likely to be tripped over and if you casually keep moving the pail to the side of the room or further away she will get used to distancing herself from it.

Here is a good example of saying NOTHING to the parents that you are doing this at daycare as they will be appalled and upset that their precious has to go without and will not be able to see that it is in the child's best interest. Many kids have given up these things for 3-6 months at my house before they do it at home and that works just fine for me.