Dear friend,
I'd like to tell you that I had the same experience like you few months ago.
Unfortunately my manager said that her budget was the same, So, I decided to ask the residents what king of activities they enjoy.
They told me to hear the piano been played and have a social conversation with something to eat and drink, etc.
Now I do their own activities, and we enjoy evening having a social conversation, I take them out to the garden and ask them to help me planting flowers too.
It's a little difficult but try it, I'm sure you are very smart and will find a way to help them. Take care ... JOHN