Toddler neck rest for long car rides?

Tori • Married with 2 year old mini me :) B/G twins due 4/2020

What do you guys use for your kids?

My daughter has recently been transitioned to a convertible car seat (still rear facing). She’s sitting more upright now, but she’s too big now for the padded straps that we used in her old car seat.

When she falls asleep, her poor neck leans sideways.

Can anyone recommend anything?