You need a PA speaker

Think about it! PA speakers don't follow the tall and thin 'speakerette' fashion of hifi. They tend to be dumpy and heavy so won't be knocked over easily (if at all).

They can be had with metal grills so inquisitive little fingers can't go poking tweeters and such.

They can also be had on castors so easy to pull out when you want to use them.

Further, they tend to be sensitive which gives them a life-like open and fast sound that is quite addictive once heard.

What's not to like