Car safety is always worth reviewing. Make sure the car seat fits properly and that your child can't unbuckle themselves. At this age, kids sometimes play rough with each other. There's a difference between aggressive play and actual aggression. Watch for patterns, not isolated incidents.
For you
They told you about their day. What they did, what they felt. That conversation is something you'll have for the rest of your lives. It started here.
Urgent
Wandering and elopement
Toddlers who can open doors may wander outside unsupervised. This is extremely dangerous near roads, pools, or other hazards.
What to do
Install child-proof door handle covers or high deadbolts. Consider door alarms. Teach your address and phone number. Ensure yard is fenced. Always supervise outdoor play.
Caution
Speech clarity expectations
By this age, strangers should understand about 75% of what your child says. If speech is very unclear, it may be worth evaluating.
What to do
If strangers can't understand most of what your child says, or if child is very frustrated trying to communicate, ask your pediatrician about a speech evaluation.