I hear some schools used to send students home with backpacks full of hundreds of dollars worth of textbooks even though they knew every book wasn't going to come back. It's called acceptable loss and is a cost of doing business. You can't deny all students access to resources just because there are a few bad apples.
I doubt children realise how expensive textbooks are, and the bullied child won't be as worried about a torn book compared to a broken ipad
When I was in school textbooks weren't expensive and they did get destroyed by little future criminals.
If a bully smashes an iPad or a Chromebook owned by the school, it's no different to breaking any other school property like a microscope. You summon the parents and bill them.