I guess that line of thinking is a symptom of a deeper line of reasoning, that we need to take advantage of the season God has us in--being a stay at home mom, moving to a new state, starting a new job, etc. (Where has God placed you? Are you taking advantage of the season you're in?)
One way to celebrate summer (which I had off as a teacher and again, now as a stay at home mom) is to enjoy God's creation. That could be hiking a really difficult trail, catching a glimpse of the bright green trees from your window, or just taking a walk through a new park. Celebrate God's creation around you. Get outside while it's still warm out! (Or hot out, but whatever, a little sweating never killed me.) Take advantage of the season you're in.
(Grab your fishing pole, Aiden! It says all ages!)