The first purchases I made were nice nap mats & sheets, blackout curtains with grommets that can be put up at nap then taken down (small hooks), a small sound machine, sturdy toddler/preschool tables/chairs, paper plates/plastic spoons, take&toss sippy cups (top rack safe, cost-efficient, easy to clean), a sprinkler, and playground balls.
Good food, good play and good sleep.
I built up from there.
Welcome to the forum!
Stick around.