"Open doors with the mouse" on October 3rd

Companies, associations, workshops, studios, laboratories and other places are opening their doors as part of this year's action day under the motto "Little Miracles".

The nationwide Action Day "Open doors with the mouse", the annually on October 3rd and which is now taking place for the 15th time, will be held in 2026 under the motto "Little Miracles". Companies, associations, workshops, laboratories, studios, social institutions and more can join until September 6th as organizer with their action or actions soon.

What happens on the day of action?

This year's theme for the day of action is 'Small Miracles': What small miracles happen every day in workshops, laboratories, or studios? Photo: © WDR Westdeutscher Rundfunk

Marvel, ask questions, try things out and discover: the aim of the action day is to To give children special insights into places, on which work, research, planning or production is taking place.

"Whether it's a guided tour, hands-on activity, workshop visit or creative action – what's needed are ideas that demonstrate: What is created through many hands, through knowledge, or through curiosity? What little miracles happen here every day?”, so the WDR Mouse-Team about the day of action. Because when "children understand how something works, something special happens – sometimes even a small miracle: a movement that sets something in motion, a process that makes the invisible visible, or a profession that suddenly becomes very close and tangible."

Application as a door opener and information for visitorsInterested companies can Apply here by September 6, 2026. (I.e.

Here it goes to the Terms and Conditions and frequently asked questions. 

All information for visitors can be found here. By the way: Children can also go with their parents to a Invite your chosen door opener with a postcardto participate in the day of action.

A look back at the past year

2025 Was there a [something] for "Open Doors with the Mouse"? RecordUnder the motto "Playtime", they opened Doors at over 850 locations nationwide – more than ever before. The VDE (Association of Electrical Engineering, Electronics and Information Technology eV) captured his open house day in a video. As one of the largest technology organizations in Europe The VDE sets the highest safety standards for electrical appliances, promotes research and young talent, and develops application rules for future technologies.

Video: The VDE opens its doors to the mouse

I agree to display all external content and to change my cookie settings to 'Allow all cookies'. Learn more in our Privacy policy.Change cookie settings

Further Impressions from last year there is on the Mouse bulletin boardAll further Information about the day of action there is on the Mouse campaign website.

DHB now also digital!Simply click here and register for the digital German Crafts Journal (DHB)!