\newcommand{\kbox}{
\vspace{5mm}
	\centering
	\begin{tikzpicture}[x=1mm, y=1mm]
	\draw[gray8] (0,0) -- (50,0) -- (50,50) -- (0,50) -- cycle;
	\end{tikzpicture}
\vspace{5mm}
}

\newcommand{\ksec}{
\noindent{}\begin{tblr}
[
	caption = {},
	label   = {tb:},
%	theme   = {custom1}
]{
	width      = {\textwidth},
	colspec    = { X[1,l] X[1,l]},
	hlines     = {gray7,0.5pt,solid},
	vlines     = {gray7,0.5pt,solid},
	rows       = {rowsep=1.5pt},
	cells	   = {font=\fontsize{6pt}{6pt}\selectfont},
	row{1}     = {t, font=\fontsize{9pt}{6pt}\selectfont},
}
{Sample: \\ \kbox{}} & {Sample: \\ \kbox{}} \\
Date: & Date:  \\
Source: & Source: \\
Notes: & Notes: \\
 & \\
 & \\
 & \\
 & \\
 & \\
\end{tblr}
\vspace{5mm}
}

% Make hrefs easier (must load package hyperref}
\newcommand\kref[2]{\href{#1}{{\texttt{#2}}}}