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.

Talk a walk in Toy R' US (Vivo or City Square branch), they have quite a comprehensive baby range which many toys suitable for 16 months old. Otherwise, can also try https://www.facebook.com/earlylearningcentresg/. I got most of my toys from there as well.