What sorts of things have you done with the littles you have cared for?
Well, I would have gotten to know them first! Learn things they like and their current schedules. I would then see what they need. Do they need more play time? More sleep? Better sleep schedule or be reminded to take more washes? It is all very personally developed.
Once those things were established and their needs become known then I would help where I could. Enforcing a bedtime and a wake up time. Coming up with a 'bedtime ritual' such as potty, wash your hands, and then brush your teeth etc.
Then I would go on further. Diaper checks for changes. Keeping good hygiene and proper care not to stay in messy/wet britches too long. Making sure they ate at least 3 meals and something healthy and sustainable. Its all about their health, happiness and comfort! Making sure that their needs are met.
Did they have any difficulty being vulnerable? If so, what did you do to help them over come that?
The few real little ones that I have personally cared for were, at first, shy and anxious. It took a short time to get to know them and their wants and needs. Then we would have a better time finding those comfort zones for the dynamic and littlespace. I would guide them with positive reassurance. Validating their behavior and comforting them in their vulnerable state. "Mommy is here." "Everything will be just fine." Guidance, trust, communication and reassurance!
Also, drawing from your own idea of needs and wants does help with setting the headspace for your little one and yourself as their big. Putting yourself in their shoes, so to speak.