Set indent and width to beamer block for nice itemize

I want to have blocks within itemize environments. The code:

\documentclass[8pt]{beamer}
\begin{document}
\begin{itemize}
\item Some item here
\end{block}
\item Some item here
\end{itemize}
\end{frame}
\end{document}


Produces something that looks like this:

But I really want the block to be aligned to the item texts, and not go further left. Started using columns for each and every block I have:

\begin{columns}
\begin{column}{0.075\textwidth}
\end{column}
\begin{column}{0.925\textwidth}
\begin{block}{\bf Output}
Good block text
\end{block}
\end{column}
\end{columns}


But this looks ugly and the document becomes unreadable. Can I make a simple command or environment that I can use like this:

\begin{itemize}
\item Some item here
\begin{gblock}{Good Block}
Good text
\end{gblock}
\item Some item here
\end{itemize}


This looks really good:

\newenvironment<>{gblock}[2][\textwidth]{%
\setlength{\textwidth}{#1}
\begin{columns}
\begin{column}{0.075\textwidth}
\end{column}
\begin{column}{0.925\textwidth}
\begin{actionenv}#3%
\def\insertblocktitle{#2}%
\par%
\usebeamertemplate{block begin}}
{\par%
\usebeamertemplate{block end}%
\end{actionenv}
\end{column}
\end{columns}}