Even though the chairs we use nowadays are a step ahead for their function and simplicity, there is a bunch of designers who consider them in a different way. It’s discussable how successful each of them is, but take a look at this relatively unusual chair which consists of 4 parts.

Everything that favours simplicity, in my opinion, increases the feasibility of the design. In order to catch a clean and comfortable shape, however, I used a simple slope.The chair consists of two slopes and two straight parts. There are 6 screws which connect those parts together. I used thin pillows on the sitting part to obtain softness. The rest resembles a simple chair.

One of most widely used 3D applications by professionals, and students alike, is "Autodesk 3ds Max". Autodesk actually has a ton of programs for 3D modeling, animation, and special effects, but 3ds Max is optimal for someone who is learning 3D, and wants to take it into a profession.I used for modeling 3DS Max 2017 and also VRay for lightin. It was a basic shapes and clear maps.

The best answer for this question came from "Linus Pauling" If you want to have good ideas you must have many ideas. Most of them will be wrong, and what you have to learn is which ones to throw away.