Old Man Money

Riddle: An old man wanted to give the rest of his money to one of his three sons, but he couldn't decide who to give it to. So he gave each son a few coins to buy something to fill their living room. One man bought straw, but there wasn't enough to fill the room. The second man bought sticks, but it wasn't enough either. The third man bought two things that filled the room. What were the things?