My PhD advisor writes funding proposals based on my ideas without involving me
Maybe your advisor is up to something... but I wonder if it's just poor communication between the two of you. Let me explain how my advisors and I work, and it might give you a different perspective on the situation. Or at least a starting point for talking to your advisor. 

I have more ideas than I could personally work on, and some of those ideas led to funding for MSc students to build upon my research. That's great for me, because it means more citations of my papers, possible co-authorship on their papers, and the satisfaction of seeing my research go in multiple directions. Perhaps your advisor is thinking along those lines, but hasn't communicated that to you or asked what you want.

My advisors typically write the proposals without me, apart from asking me a technical question now and then, or asking me to review the proposal. I'm glad, because I'm trying to finish up my PhD and don't need any extra work right now. But if I did want to be more involved in the proposal writing, I know that all I would need to do is ask.

My advisors do keep me informed of all the proposals they are writing or even thinking of writing based on my ideas. If one of the ideas was important to me and I wanted to work on it personally after my PhD, I have no doubt that they would respect that. Either they'd drop the idea, or they might suggest that an MsC student work on one aspect of the problem, while I focussed on the main idea. We'd talk about it, and work out the best solution for all concerned.

If you have shared an idea with your advisor, but haven't told him that you want to work on it yourself, maybe he doesn't realise it. So maybe all you need is to have a good talk.