This 18 Cool Gradients was designed by Osama Dawood https://www.sketchappsources.com/free-source/3607-gradients-ui-kit-sketch-freebie-resource.html

Going to a screen depending on a picker selection using states, variables and the 'Fire an items event' action

Showing a random image each time a button is pressed. Project was created using Variables and States

Scrollable Landing Page Design from: https://www.sketchappsources.com/free-source/1975-key-t-one-page-website-template-sketch-freebie-resource.html Top Menu and Side Slider changes (State) depending on the scroll position with the use of variables

Form validation using variables and states

Parallax Effect

Filtering Activity Feed (Templates) by Tags using Container States Filter / container states

Simulation of a Photo Capture

Car rental created with related drop down menus. Submenu depends on parent menu selection