Newsfeed from different sites (WP and prestashop)

Hi, an agency runs plenty of blogs (on WP) and some shops (Prestashop / Woocommerce) and wants to have some newsfeed incorporated into their main WP site. Newsfeed should consist of one article per day randomly chosen (or something like that) from blogs/shop which they are managing. Do you know, if there is any plugin way to do so? Even payed one. Thanks for your advice