What was I thinking

This morning I’m on the road down in LA (mother’s birthday celebration), and I’m realizing that I brought along a very small project, the Leyburn socks, but I am already on the heel of the second one.  What if I run out of yarn?  Will I need to get an emergency supply?  I knew I should have brought another project…

Anybody got suggestions about this?  Should I buy insurance yarn?