BRING SOMETHING SPECIAL. Sometimes comfort items like a stuffed animal or Baby Jack lovey can really help. An item that they are familiar with will assist with easing stress for the child, assisting with separation anxiety and help with this new transition. It can be used as a bargaining tool "bring your best friend to school" conversation so they do not feel alone. Always encourage your child to give their "comfort friend" a hug but keep it safe in a backpack at their designated hook. Kids of any age are usually given a cubby for special items and extra clothes or coats.
FAMILY LOVE. The kids ages that I worked with were 2 and a half year-olds, and what some kids were drawn to was a book we created with pictures provided by the families so they could still see their mom's and dads throughout the day. If your child's classroom doesn't have one, they still should have an option to have a family picture shown somewhere in the room. Sit down and encourage to draw a family picture together - it helps the daycare center know family dynamics too!
PICK UP TIME: Younger classrooms will usually have a sheet with what they did which is mostly eat, sleep, and poop. This might not be a great time to talk to the teacher about everything that happened because sometimes the teacher in the morning is done for the day and a new teacher takes over. I always told my families who picked up after I left that we could always set up a conference if they had any concerns. I recommend using pick up to reinforce that you came back for them, and you are excited to hear about their day.

With my own kids (I have a 5, 3, and almost 1 year old), I sang them a song sometimes before I left and when I picked them up. Maybe the new Music lovey would be a good idea? Do what works for you, and remember that you are doing a great job. I hope these tips help, and good luck!!!