By whom and how could artist labor be paid when the art just cannot be sold? 

:On-site sales of souvenir as a means of supporting a sustainable cycle of non-commissioned interventions   

A souvenir, a memento, keepsake, or token of remembrance[1] is an object a person acquires for the memories the owner associates with it. The object itself may have intrinsic value, or simply be a symbol of past experience. Without the owner's input, the symbolic meaning is invisible and cannot be articulated.[2] – excerpt from Wikipedia

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

^a souvenir, a DIY snow globe , a recycled bottle. 

<Conditions>

1. The souvenir may not carry intrinsic material value. 

2. The souvenir may not be a result of craftsmanship.

3. Souvenirs are only to be sold at the site of the         intervention.

4. If taken place indoor, the sales of souvenir must not   be located anywhere close to exit.

5. Chart of Hourly wage of different occupations of the   country the intervention take place will be held up     behind the souvenir stand.

6. The souvenir stand may not be accompanied by   anyone.

7. Buyer freely decides how much she wants to pay.