Run t-shirt sizing meetings, with playing cards!
Estimating large pieces of work
When creating a roadmap
T-shirt sizing is an estimation technique, using t-shirt sizes ranging from XS to XL to estimate upcoming work items. This estimation technique shows the relative effort to deliver items, without getting into granular (and often incorrect) time estimates.
Estimating work items in t-shirt sizes gives is a quick way of giving a measure of effort to assist roadmap and prioritization efforts. The t-shirt sizing process also starts the scoping conversations to understand the requirements of the upcoming items.