$1500 and another of skills? What do you think?

Well I have about $1500 extra cash right now and about $1k a month to support a small business but have no idea doing what.

Skills: routing CNC, 3d design and printing, woodworking, cybersecurity, computers, foam cutting CNC, computer drafting and graphic design.

Given the current state of the economy what would be something i could start and keep going with about $1k a month?

Thoughts?