New answers tagged product-recommendation
The best hack is one that has already been specifically engineered: They make remote buttons for them, the pictured style is one of several options. Go to a good commercial plumbing shop and you should be able to get more info.
The nice thing about children is that they will grow larger and this problem will eliminate itself (although this will then be the least of your worries). So, you only need a temporary fix. I am envisioning a piece of clear plastic tubing with an internal diameter close to the size of the handle. (A hose clamp could be used, if absolutely needed, to keep it ...
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