The soon-to-be-opened “Tanks” galleries extension at Tate Modern… and fishing for new ideas about what to put in them.
Even the very idea of having a public ideas sticky note board.. the Tate directors couldn’t dream up themselves…

https://londondada.art/2011/11/19/a-dada-deposit-in-the-newly-opened-bank-of-ideas-12190695/

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” there is the zone where a sticky note pad is attached,
for anyone with a good idea/ strapline/soundbyte about an alternative society etc… to peel off and write on. The notes are then stuck back on the wall or on a dedicated inside info board, for others to read..
That is our deposit to Bank of Ideas today. ” – Art Axis, November 2011

( * Update 2015, this ideas/feedback note-pinning board idea itself was subsequently copied shortly thereafter by Tate Britain and Tate Modern ( and are still in situ today in the gallery entrances )