\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{giraf}


\begin{document}

\section{\texttt{\textbackslash girafmathbb}}

\girafmathbb{girafmathbb}


\section{\texttt{\textbackslash (qed)(smiley)blokje}}

\noindent
\verb|\blokje| \blokje
\verb|\smileyblokje| \smileyblokje
\verb|\qedblokje| \qedblokje
\verb|\qedsmileyblokje| \qedsmileyblokje

\end{document}