I've never been stable with my hobbies, changed quite a few times. But it's good, learned new things every time. No instrument is really easy but some require a less steep learning curve than others. The ukulele is much easier than the guitar (less strings so less fingers involved, some chords only require one finger) and is very social, back in the UK, there were weekly meetups in London pubs where you get 30-40 people playing Ukulele all night together.

You should be able to play a basic song in a week or two, for example Jambalaya or Tom Dooley which have only two chords. Later on you'd learn more complex chords and more interesting strumming patterns.