Padlet is an easy to use Internet application that works like an online pinboard where people can express thoughts on a topic, brainstorm ideas, and share content like images, videos, etc. Posts to Padlet give you the option to list your name, nickname, or no name at all.
This service works online or through an app for mobile devices making it readily available with ease. Padlet boards can be shared with others through social media, links, qr codes, or embedded on your website as shown below.
More examples can be viewed here.