Crochet Flower Coaster
This free video tutorial from Elyse at ElyseCrochets is the coaster I reach for when someone wants a finished thing fast. It's a five petal flower with a sunny center, worked entirely in the round, and the best part is there's no magic ring. You start with a simple chain joined into a little circle, so it stays friendly even if magic rings still make you nervous.
It uses just worsted weight yarn and a 5mm hook in two colors, one for the center and one for the petals. It barely makes a dent in your stash, so it's a lovely scrap project, and most makers finish one in well under half an hour.