Carbon: modifying buttons and "Item Actions" display

I'm using the Carbon theme, but would like to move some options around a bit. Specifically, I was thinking of adding a couple of "buttons" alongside the "Show Sidebar" and "View Slideshow" buttons atop my album/photo pages. ie, subscribe to RSS feed, with a little RSS icon (yes, I know I can add a RSS block elsewhere, but that's not what I want). It seems that these buttons are generated from $theme.itemLinks or $links, where are those created? And how can I add new ones? I'd also like to add a "View Full-screen Slideshow" button up there, rather that make users find it in the "Item Actions" list.

Another quirk I'm fighting is that if I display my "Item Actions" not as a pull-down, I end up with a list that appears to have been floated left, such that actions aren't each on a newline but side-by-side. Is there a way to fix that? I tried hacking album.tpl to add more divs, but the actions seem to come as a single block (core.ItemLinks). That seems to be an array, but I don't know the code well enough to figure out how to split it into separate divs.

Thanks!