Whether you're good at it or not, bowling is a fun thing to do with friends and family. But a session at an alley requires planning and isn't a cheap outing! Why not build your own backyard alley you can use anytime?  http://diyprojects.ideas2live4.com/2016/04/01/build-a-backyard-bowling-alley/  It's definitely a build worth the effort if you're a bowling enthusiast.  Or if you're someone who loves hosting BBQ parties, this would be also be a great idea for entertaining your guests. :)
{}