Sitting 4 stakeholders and 2 facilitators down for a meeting that discusses a range of topics and encourages co-questioning.

Working with a 3d printed object with a digital screen built into it that can't register any user input.

Having people complete an online form to describe their problems with a current version of a piece of software.

Asking people to rate how much they agree with the statement "I would complete my work faster with this tool" on a scale from 1-5.

Making a simple paper representation of a system that lets you flip between the pages to see how different interactions with the system would work in the real world.