iPad illustration has become a major part of my client work and the brush library question comes up constantly in communities I’m in. Sharing what’s actually in heavy rotation for me.
Shape brushes and stamp sets I return to regularly:
Botanical and organic shapes: leaf, petal, branch, and seed pod stamps work as either standalone illustration elements or as texture fill. Look for ones with natural edge variation rather than perfectly crisp vectors.
Geometric and architectural: repeating tile patterns, architectural cross-section shapes, and modular grid stamps. Useful for pattern design and for clients in construction, interior design, or surface design.
Abstract and texture: grain and noise stamps, rough edge stamps for collage aesthetics, paint blob shapes for organic fills. These are the ones that look different in every use because the combination is never the same twice.
For lettering work: brush shapes that mimic chalk, marker, ink, and screen print textures add authenticity to hand-lettering compositions without needing to physically create them.
Marketplaces I’ve bought from that have been worth the cost: Design Cuts for curated multi-creator packs (often significantly discounted), True Grit Texture Supply for their distinctive analog aesthetic, Bardot Brush for botanical and organic sets.
The stamp layer technique: most professionals use stamps as separate layers that they can scale, rotate, and adjust opacity on independently. Not stamping directly into the canvas at full opacity. This keeps the composition adjustable.
What packs are you using consistently?