Looking at a mountain is very intimidating...looking at the small hill you're climbing on that mountain isn't. Small goals add up to bigger projects. Any small thing you work on can give you an idea. Those ideas can be cobbled together into something very eclectic and more interesting as a result.
When I'm stuck, I work on things that I know I'll eventually need no matter what the project is...a set of nuts and bolts, chairs, tables, light bulbs, etc. Then, those small things can be used to make more objects (there are bolts, nuts and screws on tons of objects). Building a library of such things is very helpful and keeps things moving forward during lulls in motivation.
I think your funk will be short-lived, Mark.
I'll send some positive energy toward your brother and hope he has a speedy recovery.