Followed this tutorial to something trippy-lookin'. Basically, this is a wireframe with a short cone shape, inside a spherical mirror. The crossing lattices give that nice diamonds-resizing-and-morphing effect...O_O Took some advice
Followed Blender Guru's tutorial to make this nice-lookin' donut!
The bed and rug are completely original. The top sheet is a plane folded on itself, with cloth simulation applied - I set up collision on the mattress below and let the cloth animate to lay flat & fold onto itself. That created the physical wrinkles...
Followed a beginner-level tutorial for making a treasure chest here: MODELING for Absolute Beginners. Pretty simple stuff, just a bunch of loop cuts and extruding faces along normals.