Here is my entry (you can see it in its final position on my posts from last month here); it's an acrylic basking platform inspired by Joey's video he made for bending acrylic with a hand torch.
I went to my local Curbells Plastics shop and got a remnant of quarter-inch acrylic for less than $25. It was 48x36 (inches). I used a table saw to make the necessary cuts, then heated the acrylic with a hand torch, bent over a carpenter's square. I then turned the piece over and heated the top of the ramp where it meets the platform till it bent to the correct angle for the ramp.
I then bought one 12x12 tile from my local hardware store for like $5, the kind that's made up from little smaller tiles (or in this case, mini bricks), and I cut the strips apart so I could separate them further, allowing my turtle's claws and nails to grip them better on the ramp. I had some leftover silicone from the tank build and siliconed them to the ramp (yes, silicone works fine on acrylic for something this light, not for sealing watertight walls of aquariums).
The final piece was a welcome mat cut to size so that the turtle will have a grippy comfortable durable waterproof pad to bask on, plus it protects the acrylic. It works perfect and the turtle gets up and down it very easily. I also used a floor flange and a ceiling fan downrod to hang the basking lights above the platform.