Try to be patient when your infant throws an object over and over and over again. This is an important part of brain development, they are learning cause and effect.
When your child is older and still throws things have them help you pick it up. Or if they make a mess by coloring on the wall or spilling water have them help you clean it with a sponge or towel. My dd loves to help clean things, it makes her feel like a “big girl”.
I find that if I have her help me clean the mess it reduces my irritation and I think eventually she will get tired of cleaning and think twice before throwing all her food off the highchair. I could be dreaming but hey it’s worth a shot right?
This picture really has nothing to do with this post. Just my adorable daughter helping me make cookies on New Years Eve. And no, I did not make her help clean the mess!

Don’t put your baby in a walker or exersaucer or if you have to limit it to 15 minutes at a time no more than twice a day. They develop the wrong muscles needed for walking and your baby would be better off exploring on the floor.
This way she can learn to move her body from rolling to crawling to standing and finally walking!

*photo credit: big stock photo