I love all these answers. The donation to the animal shelter is a good idea. I teach a very varied group of people but that is something that transcends a lot of differences.
Because my training clientele (as opposed to my group ex clientele) was relatively small I did have a ‘tea’ for them a couple of times in the gathering area of the building where I had my space. It was enjoyable, and allowed the clients to share ideas and create a sense of community. Actually one of the yoga studios where I teach is doing a solstice retreat“ free classes, meditation walks, shared food“. for one whole day.