Simple 3D project required

Need a simple and Cheap 3D model. Banner Frames- Picture attached i need 4 of these identical meeting at the corners to create internal square Banner - The banner part (the white canvas between red tubes) will need to be in a colour with some text on it ( more on that later) Internal Square- within this square you will have to create a Stainless steel Table and 2,3 more things (Does not have to be highly detailed) Will need simple background as if this unit is in a shopping centre simple project really