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?

Kids are so spoilt for choice these days :) I remember using hand me downs from my older sibling and my first "new" bag was when I entered secondary school -- a Converse bag. Anyways, Kiddy Palace or even Popular Bookstore for those bags with popular cartoon characters and you can even try those push cart stores outside Bugis Junction for cutesy kids bags for an okay-price.