The theme of the puzzle is objects, as each of the solutions are words related to physical items. BAGS is a type of container, ANAGRAMS are word puzzles, PUB is a type of bar, TIMES is a newspaper, PIX is a shortened form of pictures, SOS is an emergency signal, TWO is a number, EAST is a direction, ENDS is the conclusion of something, GUNS are weapons, TREE is a type of plant, WINE is an alcoholic beverage, KNIFE is a tool, BRIDGE is a structure, BOOKENDS are objects used to hold books, SLOTMACHINE is a type of gambling game, SOURCESOFOIL is a type of resource, THINGSTODRAW are items that can be drawn, THINGSTOBREAK are items that can be broken, MONOPOLYTOKENS are pieces used in a board game, NAMESOFREINDEER are characters from a popular story, STATUEOFLIBERTY is a famous monument, and THINGSWITHLINES are items with lines on them.