Does anyone have good wedding gift ideas? It’s a while away but I though I’d start soon

So this is a weird request, but my coaches are getting married next fall, and I want to crochet them something. They’re thirty years older than me, but we have an excellent and close relationship, as they’ve been teaching me for eight years in a very emotional sport. I was thinking of crocheting something for their wedding, but I have no clue what to make. I’m an experienced beginner, I’d say. It shouldn’t be too big, but I want to do something fun and elaborate. Does anyone have ideas for something I could crochet them/