Here are some sets of simple icons:
And here are some old illustrations made for studying practice, webinars or freelance projects.
Flat illustration and pattern:
Emotion, color and pattern cards:
Flat illustration of a lemonade bottle:
Colorful night forest lets everyone be in "children mood".
These funny friends - giraffe, butterfly and twin-owls - can always rise you up!
Colors card:
Gift box:
Wall papers:
And different variants of coffee cups: