The next one I'm working on is shapes.
I'm having a horrid time finding a slide that looks kid-like, but is more straightlined to make a triangle from the side. Most are curved for the slide part, and the stairs are very angled. I was thinking a straight pole going down from the top, with the stairs angling out from there, and then a mostly straight slide, with maybe the ground making the 3rd "leg" of the triangle (A right triangle, not isosceles) or even a Piece of plastic or wood on the sides making a triangle. But since I'm not finding one anywhere, I may be reduced to trying to model one!
I've already kit-bashed myself a raft-rectangle, so the triangle slide is the only one holding me up. I have about 6 more images to do for it, I think, but I have the assets for those. So, for now I have abandoned the triangle, and will come back to it when everything is done.