I would throw in a bright background, filling the screen. Yellow, green, something that makes it really pop. Make it modern and sleak, no box shadows or glimmer, go bold with typography and throw in some illustrations. Icons8 have some truly unique free vector illustrations, https://icons8.com/illustrations, I use them all the time in my designs. Source: over 1 year ago

No, I wish I was that talented. I found them on Ouch you can download a free png version as long as you mention the artist and the website on your project, it's in my footer! Source: about 2 years ago

They're called vector illustrations just for reference, and as a few other folks have pointed out, there's a ton of resources out there (free and paid) for finding vector illustrations of all different styles you can use (Icons8, unDraw, etc.). Source: over 2 years ago

I like the diversity on Icons8: https://icons8.com/illustrations - and they're free to use with attribution. Source: over 2 years ago

Icon8 not only provides us with a huge collection of vector icons, but vector-based illustrations as well (Ouch!). Illustrations are grouped into categories and we can search for any type of vector illustration using the search bar. - Source: dev.to / over 2 years ago

I recently bootstrapped a company and we wanted some nice looking default images for our users that didn't upload their own and we found some out there but not too many with the goal we were looking achieve — other than boringavatars.com (where this project gets its inspiration!). We didn't want to implement avatars creators like the ones where you can customize the exact look and feel, that seemed too... Source: 8 months ago

Makes sense. I concentrated on porting what existed in boringavatars.com first. There is definitely room to alter the algorithms that generate the images now, though. Source: over 1 year ago

I would first like to thank Boring Designers for their initial work on boringavatars.com. All I did was port what they did to other frameworks using Mitosis. Source: over 1 year ago

Boring Avatars - Generate Avatars for your users faster and easier if you are lazy like me. Source: almost 2 years ago