Just keep everything precious and breakable out of his reach. Or put it away somewhere safe. In our kids toddler years there was a sort of safety tideline 3 ft high all round the kitchen and sitting room ( vacant shelves, locked cupboards, concealed switches and sockets.).
From around 3 or 4, I have some "precious things" which a very careful, gentle, responsible child can be granted the trusted honour of being allowed to look at and handle under supervision. A special treat, not for babies, careless rough people or when parents are not there. DH ditto with tools. That's how children start to learn about safety, risk, care and respect, gentleness and trust, responsibility.
In a few years time , if you've brought them up well,
you'll be able to leave robust treasures around safely once they understand
the boundaries.
When they are both rambunctious kids at large with favourite toys , make intricate games etc, they'll teach each other pretty quickly (the hard way) not to break a beloved toy or wreck a sibling's game.
Meanwhile all you can say to a toddler is " That was Mummy's very special thing and I'm very upset because it got broken. We must be careful with other peoples things".