I just put together a PDF of all the practical intervals that can be played on an ‘ukulele. Only some of them with make sense by themselves, but even the weird ones helped me see the relationships between intervals and chords better. High-g users: stick to the shapes on the bottom three strings and keep in mind that some of the big intervals on page 2 need a low-G anyways. Read the boxes just like a chord chart, but you will only play the two highlighted notes. Some of the stretches are quite a ways, so don’t hurt yourself. Since these are all movable shapes, you can shift them to the higher frets to make them easier to grab.