I’d love to know how you got so many students too. I have a lot but it took a while to get them. Since I have so many I have to be really careful of what I give students but I also feel bad when they give me Christmas presents, etc. So for Christmas I write them a card for them and for their families and I give them a small bag with little candies in it. This probably means I spend $20 total for the candies, cards, and little bags.
For recitals I give a flower to each student like a daisy or carnation and at the end of the year recital I give a harp pencil. I also watch out for unexpected harp items and I have also cut out stickers from Lyon and Healy because they come six on a sheet so if you cut it up it saves money and is something nice for the students. Lyon and Healy has tons of these stickers and students never mind getting another sticker.