whatleycc

This plugin is meant to help you create “dynamic” menu items. This is ideal for situations where you want to have custom pages that appear at certain times of the year or seasonal pages that need to change out every few months. Requires you use the built in Appearance->Menu to setup your menu links and not simply default the menu to all pages on your site. There are 2 types of dynamic menu items created, each work in conjunction with the other.
Default :: This only requires a starting month to work. What this does is assumes that all items within this section will be displayed without any gaps. These ideal for seasons and will be displayed if there are no other dynamic posts.
Set Dates :: This is ideal for things like holdiays or specials that you may only want to display for a set period of time (e.g., 1 day or a few weeks only, not the whole month). These are displayed first and if none are active, the active Default page of the period is selected instead.

Dynamic Menu Item

Create dynamic menu items which allows you to schedule pages to go live on the menu. Ideal for sites that need seasonal content use specials/holidays.

cmborchert

This plugin for WordPress adds a background-size controller to the Background Image section in the WordPress Customizer.
You can access the new controller by going to Appearance > Customize from the Dashboard, and clicking on the Background Image section.
Once you’ve added your custom background image, you can set your background-image size to: 
 – “Cover”: As large as possible; fills entire view, with cropping. 
 – “Contain”: As large as possible, without cropping; fits inside of view. 
 – “100% width”: Width fits view perfectly, height may be smaller or larger than view (equivalent to css ‘100% auto’). 
 – “100% height”: Height fits view perfectly, width may be smaller or larger than view (equivalent to css ‘auto 100%’). 
 – “Inherit”: Sets background size to whatever parent element is set to (html, in this case). 
 – “Custom”: Allows you to put in your own css to be applied in the section called “CSS for background-size (if ‘custom’ selected).”
To learn more about the CSS background-size property, go to:
https://developer.mozilla.org/en-US/docs/Web/CSS/background-size 
or 
http://www.w3schools.com/cssref/css3_pr_background-size.asp
<h3>Notes</h3>
Notes: 
*The plugin works by adding styles to the body.custom-background class. If the default custom-background support has been disrupted, then this plugin will not work.

Add Background-Size to Customizer

Allows you to control the background-size of your main background image from the comfort of the customizer, using predetermined values or custom CSS.

Dynamic Menu Item vs Add Background-Size to Customizer