Need mittens but don’t have any! Use socks. Also if you use the socks with the grippy things on the bottom bubba will have no problems holding onto things.
They can be used to keep hands warm. Stop bubba from scratching, pinching or sucking their fingers/ thumbs.
This is also a great way to use up odd socks.
For tiny bubbas you may also want to sew teething rings, rattles etc to the ends of the socks. Creating a functional mitten and play toy in one.
Alternatively you could make your own – https://www.youtube.com/watch?v=5yew5FPdisA