N.T.
My daughter is 2.5 and we were having the same battle with her wanting a paci all day. So we started to tell her that we have to set the "paci timer" (egg timer) and she could have her paci when it went off. (5 minutes, then 10, then more...) Most of the time, she had forgotten by the time the timer went off. If she remembered later, we just set it again and started over!
That got us down to just using the paci for bedtime. She started chewing on her pacis, so we tried going the route of telling her there we no more at bedtime because they were broken. She just started to suck her fingers, which is way harder to deal with in my opinion! So we still let her have it at bedtime for now. We tried talking about giving the pacis to the fairy or a baby, but her response was "no way!"