michaltry

This plugin allows you to go on a vacation or break while running a WooCommerce store. 
You can choose two dates inbetween which the shop functionalities of WooCommerce like cart, checkout and orders will be disabled temporarily. 
It shows a WooCoommerce-style notices about the store turn-off, including notice text customisation. 
It has a clean, readable menu inside WooCommerce -> Settings -> Disable Sales [tab]

Disable Sales for WooCommerce

Disable Sales for WooCommerce adds the ability of temporarily disabling shop functionalities in WooCommerce.

tazotodua

After activation, you will have an additional checkbox, so you can temporarily hide(disable) any widget from visitors.
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(P.S.!! This is a LIGHTWEIGHT (NON-SLOWING) Plugin. See other <a href="http://bitly.com/MWPLUGINS" rel="nofollow ugc">MUST-HAVE PLUGINS</a> for everyone. )
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Hide(disable) any Widget temporarily

Hide(disable) any Widget temporarily with a simple checkbox.

Disable Sales for WooCommerce vs Hide(disable) any Widget temporarily