The rubber on a squeaky toy can be thin as well as could develop holes after hours of being chewed forward.
Holes and slits on floaters and life jackets make them dangerous for your kids. These can liven up any toy maybe used alone and hung from the cage rungs. https://trend-toys.com/products/rolife%E8%8B%A5%E6%9D%A5nanci%E5%9B%A1%E8%8C%9C%E9%87%91%E9%92%97%E4%B9%8B%E5%B9%B4%E7%B3%BB%E5%88%97%E7%9B%B2%E7%9B%92%E6%96%B0%E6%AC%BE%E5%8F%A4%E9%A3%8E%E6%89%8B%E5%8A%9E%E6%91%86%E4%BB%B6%E7%A4%BC%E7%89%A9%E5%A5%B3