A sphere.
Banners that people have won
a cube, postit notes
Rectangular
I think some baseball fields are shaped in the shape of a rhombus and some mirrors are too.
Jewelry
skylights, signs, picture frames, kites,diamonds,etc.
A rhombus has four sides of equal length, and opposite angles are equal.A rhombus with right angles is a square.A rhombus without right angles is ...a rhombus!# So the shape of a rhombus can be square. Some kites are square. # or a rhombus can be 'diamond' shaped, like the diamond on a suite of playing cards. Some kites are diamond shaped.But some kites are shaped like a box (a box kite, for example!), and some kites are shaped like dragons! A rhombus does not look like a box, nor like a dragon!* For more information, and some diagrams, see Related links below.
chicken nugget
Some objects that are shaped like an oval include eggs and footballs.
it is a bit like a diamond but wider and a bit squre shaped
A rhombus is shaped like a diamond. It has equal sides but it does not have all equal angles. However the opposite angles are equal .
A tent...
eggs
A sphere.
There are no ordinary household objects shaped like a decagon. Some glasses or vases may be decagonal in shape.
Kites, computer screens, computer keys, and wireless routers are just a few objects shaped like quadrilaterals.