What model can i design any ideas.

Hey
It may be you are in the wrong place taking the wrong approach.
You are using a CAD program that is meant for prototyping and such is that correct?
I looked at your page and honestly I can't imagine anyone being interested in your models.
People come here to buy assets for games, accessories for VR, assets for high quality renders.
It looks like what you do is model parts and machinery for real world use based off specs provided by a client.
I feel like you would be much better off with a portfolio of the work you mention in your bio and an account with a site like Fivr. You can get the kind of work you were trained for.

Furniture and jewelry. Never enough of that on this website.

"What model can i design any ideas."

Of course! here an idea;

Reproduce buildings built by Antoni Gaudí i Cornet.

I will by every single 3d model from you! Promised.

Finita la comedy.

Source: https://grabcad.com/library/soap-case-13
https://www.cgtrader.com/3d-models/household/other/soap-box-75f1a779-2b81-4df1-8285-4f315d5d8de7

Source: https://www.cadblocksfree.com/en/beverage-crate.catpart.html
https://www.cgtrader.com/3d-models/household/other/beverage-crate

That you made these models free and liked my post will not save you from account banned.

Any thing that will attract more customers and are rare