Brushes… particularly travel watercolor brushes.  I love, love, LOVE the first three… and what a lovely present they were!  From Left to Right…

Escoda Versatil, size 10

Isabey Squirrel Mop #6202

daVinci Ussuri sable #1523, size 6

Daniel Smith 23-0 Synthetic Travel, size 8 (discontinued)

daVinci synthetic, size 5 (came free with a watercolor set)