I am not a type of DIY or pinterest mom. Please give me reccomendation about kid's toy that i can buy to help my 16 month old son practice his sensory skills.

You can buy puppets play, musical instruments, water related toys, bubble blowing and etc for sensory stimulation. If you are a fan of Montessori, there are a lot of sensory activities you can do with your kids. You can refer to this website for more ideas: http://www.sensorylifestyle.com/activities/top-10-sensory-activities-toddlers-16-months/