My son is finally ready for school at 18 months! Where can I buy a backpack for a toddler and any recommendations on brands you liked?

Congrats!!! I got skiphop backpack for my kid. I got it at taka baby fair months ago when there was sale. Skiphop is a trusted and common brand. Alot of parents got this backpack for their toddler. You can get it from online: http://www.babyonline.com.sg/skip-hop-zoo-let-mini-backpack-with-rein-bee.html If you are not brand conscious and do not mind getting something cheap, you can get it from Q10. It is less than $10 after shipping. Material is cotton. You can put in washing machine for washing. http://www.qoo10.sg/gmkt.inc/Mobile/Goods/Goods.aspx?goodscode=423699286