$*$ Suppose that you are the purchasing manager for a software company, and need to recommend how to source for the following items.

$1)$ Photocopier paper for office use.

$2)$ Tee$-$shirts with your organization's logo for the special $10$th annual all$-$company picnic.

$3)$ Computer hardware to support your organization's operations.

$4)$ A security update to secure the IT system of a customer that was previously designed and built by your company.

$5)$ The design and launch of a public relations campaign to highlight your organization's corporate social responsibility initiatives.

For each of these items, what will be your sourcing recommendations in terms of $($a$)$ make vs$.$ buy, $($b$)$ domestic vs global sourcing, $($c$)$ sole vs multiple suppliers, and $($d$)$ preferred method of payment to suppliers? Briefly state your rationale for these recommendations.