I think we should have some bonding time. Chemical bonding, that is. In the clever chemical puzzler Sokobond, you're given a handful of atoms and the task of them joining them all by pushing and chaining them together. Like Sokoban puzzles you might be familiar with, you don't have much space to do it all in, so you've got to use the splitters, bonders, and rotators provided. Even if you don't give a hoot for chemistry, Sokobond is still a very accessible puzzle with easy-to-learn rules and an enjoyably element-ary design.