Good limoncello really needs at least a month for the lemon peel to sit in the alcohol and then another week for the lemon infused vodka to rest with the simple syrup. Use organic lemons since you're using the skin.
Cute idea… can even be used in the beginning of the school year. I’m looking forward to a latte fun this year. End of the year teacher gift w/Starbucks gift card (or for an old teacher just to remind them how much they meant to you!