Don't accept the toys. Slightly different concept( and sorry to vent) but my mil keeps buying boxes of Huggies when on special- we are now 100% using cloth so after last box ( where we mixed used) I said no more, She brought another box.
I said thank you but no thanks keep them at yours but we won't take them.
Dd is now nearly out of that size,she text DH the other week asking if we wanted them for daycare- we said no. Her response - but she'll grow out of them and it's a waste. We stuck to our guns it's her problem we said no to begin with.
So moral of mine story - don't accept and maybe keep them wrapped and donate to charity?