How to ask my boss for Development

I am in a direct report position and only recieve one-on-ones every quarter with my boss (at least we have something). The culture of the company is pretty relaxed when it comes to planned career development, as many companies are. With so infrequent O3O's our relationship is far behind where it should be and I don't feel we will ever get to a place where I can easily ask for development/coaching opportunities.

What I am doing is scooping up any sort of project that comes along. None have had any lasting significance, but I figure getting good at the small things and developing a reputation of a problem solver can't be a bad thing.

So how do I approach this subject without coming across as desperately looking for the next opportunity, as I am only 6 months into this new job and the lack of an extablished relationship with my boss.

(I know I need to work on the relationship and I wish my boss would prioritize our relationship higher. )

Thanks for any insight and suggestions.

~Nate