I have a little bag that I take to church with me. It's filled with things to occupy my grandson and keep him quiet. It doesn't go home with him. It's saved for church only. When he sees it, he wants to carry it and tells everyone, "towees, towees".
I started with an insulated lunch bag.
Preferably, one that the lid will lay flat when open.
This one happens to have a magnetic? scribble board in the lid.
Then, I fill it with an assortment of things that might interest him. They have changed with his interests and abilities.
He liked this when he was smaller. It gives little fingers something to hold and they really aren't noisy. I used a springy key ring wrislet and attached an assortment of other plastic key tabs.
Stickers, a simple stencil and a pencil for little hands.
A small snack of cereal and dried fruit. Sometimes, I keep that in my purse until the sermon.
Small toys. He's into buses and airplanes, currently.
And that's my "towee" bag. His mom says less is more. So I rotate items from time to time.