Advice???

I'm a grassroot coach for U9s side. I've noticed that GK is one spot which is left out by most of coaches including me. I'm a bit obsessed with developing technically good players. How do I help the GK to improve better if they don't go for any 121. Do I just see some gk videos and help them technically? Or is it worth to invest time to volunteer some gk coach to learn more technical things?