Carrots are such a wonderful crop to grow in part because there are so many ways to store them.
They can be blanched and dehydrated or frozen, left in the ground up until it freezes, held in the refrigerator for a few weeks, or kept in cold storage well into the winter.
Simply trim the tops to 2" and brush off any dirt; don't wash them though.
Lay the carrots on a bed of sand, cover with more sand, and continue until the tub is full.
Place in a cool area and mist the sand with water every now and then.
We used a plastic dish basin. My friend Beth told me her Dad used to use a kiddie pool.
And doesn't re-purposing make it all the better.