Creating Blob Surfaces in TikZ?

[Dustinsfl]

\begin{tikzpicture}[scale = 1.5]
\draw (0,0) circle (1cm) node[anchor = north east]{$\text{S}$};
\draw[->] (.70710678118,.70710678118) -- (1.4,1.4) node[anchor = south east]{$\vec{n}$};
\end{tikzpicture}

I have made a circular surface with normal vector. How can I make blob instead?

 

[earboth]

\begin{tikzpicture}[scale = 1.5]
\draw (0,0) circle (1cm) node[anchor = north east]{$\text{S}$};
\draw[->] (.70710678118,.70710678118) -- (1.4,1.4) node[anchor = south east]{$\vec{n}$};
\end{tikzpicture}

I have made a circular surface with normal vector. How can I make blob instead?

Do you mean something like $\bullet$

Maybe there is a way to change the size of this \bullet

 

[Dustinsfl]

Do you mean something like $\bullet$

Maybe there is a way to change the size of this \bullet

No I mean a surface that isn't circular i.e. a blob.