An Exercise
A physical exercise such as repeatedly lifting a weight in a gym could be seen as pointless, but it has an effect of the physical condition.
Being able to understand and overcome problems when trying to achieve something is a useful skill and such an exercise as this will only enhance those skills.
I like to tinker and make stuff work, but as soon as it works I move onto something else. The benefit of all that tinkering pays off in my day job.