Yes to all of those!! Blackberries, watermelon, pineapple. Literally any thing
Try one fruit at a time so you can make sure they’re not allergic
With strawberries I peel them because of the tiny seeds on the outside.
Be careful with pineapple because of the acidity. We also freeze baby food in ice cube trays and cut them and put it into the teether. We do regular ice cubes too to get her used to the taste of water.
Avacado, strawberries, blueberry, banana, cut grapes, mango