Korean-style roasted seaweed, AKA nori. One package has about 1g carbs. They're good for a savory snack, sort of like an alternative to chips. Here are three kinds that I've tried, all tasty:
Stevia drink flavoring — the only one I like enough to repurchase is the berry flavor, but it's worth trying all the flavors to see which you prefer.
Psyllium husks: https://smile.amazon.com/gp/product/B000N7DP6G/
These are my favorites: gimMe Snacks Organic Roasted Seaweed Snacks, Sea Salt, 0.17 Ounce (Pack of 12) https://www.amazon.com/dp/B00BCG0OB6/ref=cm_sw_r_cp_api_QvDQybG9YXVTB
These are also good: Kim's Premium Natural Roasted Seaweed (Nori) Snack 16 Pack / Sea Salt, No Msg, Low Calorie https://www.amazon.com/dp/B01ECY8I1W/ref=cm_sw_r_cp_api_xwDQybCZXV1X0
I like most brands though my family is a lot pickier.