This is a fun mental exercise. I found this rather fascinating. I see things in it that I both agree and disagree with. Whatever the case, it's very fascinating.
You can read about it here: http://oliveremberton.com/2014/how-to-connect-deeply-with-anyone-in-5-minutes/
These are my answers to the questions.
1. The cube. It's small. Maybe about 5 inches across. It's metal. Polished to be perfectly reflective on each side, like mirrors. It's on the ground, sitting flatly on the sand.
2. The ladder. Medium height. Wooden. Very simple; two sides and simple wooden rungs. Slim, but sturdy. It's base is shoved down into the sand so that it is propped up, vertical. It's standing a few feet behind and to the left of the cube.
3. The horse. A sturdy bay horse. Nothing exotic. But not a work horse. A smart, quiet, companionable horse. Steady and sure footed. Like one a cowboy or adventurer would ride. Very reliable and loyal to it's rider, but also it has a mind of it's own and will from time to time disobey or get into mischief to remind its owner of that. It's standing a short way from the cube, to the right. It's farther away than the ladder. Maybe 10 to 15 feet from the cube. It's fully saddled and ready to go, but it's bridle is hanging down to the ground as if it's rider should be there but is somehow missing. As if the rider dropped it. It's waiting for someone to pick up the bridle so that they can go. But it's not fidgety. Just patiently waiting.
4. The flowers. Crocuses. Small, close to the ground. Purple. Sprouting out of the sand in little clusters. Each cluster is a fair distance from any other. Random distances. Some closer, others a long ways away. There are probably 5 or 6 clusters in the main view, but they grow scattered all across the desert. The horse is standing next to one cluster. Every so often it puts its head down to sniff and nibble at it. But he leaves it there and doesn't eat it.
So. I guess that's me.