Set up materials in the order people will use them. Put only the needed items on the work surface. Keep reserve supplies with staff so one enthusiastic participant cannot use the whole week's paint.
Teach how to start, move, clean, and finish. Show where wet brushes go, where scraps go, and how to carry work. These are part of the lesson, not boring details to rush through.
Give each project a safe internal label and a drying location. Names written only on a removable tray can become separated from the work. Avoid posting unnecessary personal information in public areas.
Build cleanup into the scheduled session. Do not start a thirty-minute wet project ten minutes before pickup. Participants can help with age-appropriate tasks, but they should not handle hazardous waste or specialist cleaning beyond the approved plan.
Agree on disposal with the venue and relevant authorities. Do not assume paint, clay, solvent, resin, or plaster can go into the sink. Follow the product and site procedures.
Protect choice. A child who dislikes sticky textures may use an approved tool or alternative medium. The lesson goal may be achievable without forcing direct touch.
Your task: Rehearse one complete cycle from clean table to finished cleanup, not just the making step.