Some small stocking stuffer ideas for the swimmer in your life. Right now, all these are less than $10. The links below work for my swimoutlet.com affiliate account.
Put this chamois towel in your swim bag and always have something to dry off with… even if you forget your towel. There are a couple different colors available.
Display your holiday spirit with a Santa silicone swim cap
Goggle bungees are a great backup if your goggle straps break or if you want easy adjustability.
These Sporti goggles are great for the price. They come in a bunch of different colors too.
If you need any more ideas, swimmers always seem to need suits too!