What natural lubes do you use?

Chani ā€¢ Photographer, nature lover, strong, spirited, kind, plant based, loyal friend. TTC.
I've heard about pre-seed but am unable to get some today as I don't have the car. Today is my most fertile day but sometimes I need a bit of extra lubrication. I don't want to use something that might kill the sperm. Any ideas? I've got a supermarket 2 mins away. šŸ˜Š