Worn in lovey

Cassandra
Edit: we're in luck today, the restaurant called and they found his "sleepy". I'm really glad bc he had a nightmare that a monster ate his sleepy and I think it would have been one of those life moments like when your first pet dies bc he's almost 5 and is generally kinda sensitive about things. Thanks everyone for your suggestions. 
So my son has  this little stuffed animal head/blanket thing that is his lovey, we have four of them but they have a ranking of preference. The oldest being his favorite bc it is the most "scratchy". Well today he went out with my aunt to see a play and to lunch and he left it at the restaurant and its not looking good that they will find it. Does anyone have a recommendation for how to make his other loveys more worn in and scratchy?