Discover a curated selection of large styrofoam balls and half-sphere domes suitable for crafts, decor, stages, and display projects. This guide highlights five top options that come closest to the 18-inch size category, with practical details on durability, customization, and reuse. Each entry links to an Amazon listing for quick comparison and shopping convenience.
| Product | Size | Material | Best For |
|---|---|---|---|
| Shape Innovation – Foam Ball – 16 Inch Diameter White EPS Polystyrene Sphere | 16 inch | EPS polystyrene | Arts, architecture, props |
| Velocity Soft Foam Practice Lacrosse Balls | 12 balls (size matches official lacrosse) | Soft foam | Indoor practice, teaching, crafts |
| FloraCraft SmoothFōM Hollow Half Ball 5.9” x 11.9” | 5.9” diameter half ball (11.9” tall) | EPS foam | Paintable decor, classroom displays |
| Juvale Half Sphere Foam Ball 12 x 12 x 6 in | 12 x 12 x 6 inches | Foam | Centerpieces, floral arrangements |
| Large Styrofoam Balls 8 Inch (2 Pack) | 8 inch each | Polystyrene | DIY crafts, ornament base |
Shape Innovation Foam Ball 16 Inch Diameter
Hand crafted, custom made 1 lb. EPS foam offering versatility beyond standard Styrofoam. Suitable for a range of applications including arts and crafts, architecture, stage and theater props. The highest quality polystyrene foam ball can be decorated, carved, and sanded for a durable, reusable prop or display piece.
Styrofoam Balls 10 Inch, Extra Large
These 10-inch diameter styrofoam balls provide a spacious canvas for DIY art, holiday decor, or stage props. Made from premium polystyrene, they are lightweight yet sturdy, easy to paint, carve, or embellish. Great for wreaths, solar system models, or decorative installations that require a bold focal point.
2 Pcs 10-Inch White Foam Extra Large Balls
Pair of smooth, dense foam balls ideal for classroom crafts, centerpieces, or solar system projects. The surface accepts painting and pinning, with a design that makes it easy to align multiple pieces in larger installations or display setups.
ZOOFOX 4 Pack Styrofoam Half Sphere, 7.6 Inch
A pack of four white hollow foam hemispheres, each about 7.6 inches in diameter. Made from durable polystyrene with smooth edges, these domes are easy to customize with rope, glitter, paint, and floral accents for DIY decor or event displays. Complex shapes can be assembled into larger spheres as needed.
RETOONGKING Large Styrofoam Balls 8 Inch (2 Pack)
Two 8-inch diameter solid foam balls suitable for a wide array of crafts, decorations, and educational projects. The solid foam is lightweight, easy to carve or paint, and designed to withstand outdoor and indoor use with proper sealing and handling.
Buying Guide
- Size vs. requirement: If you specifically need an 18-inch size, most options here are slightly smaller. Look for large diameter or half-sphere designs that can be combined to approximate an 18-inch form or used as modular components in a display.
- Material and finish: EPS polystyrene is lightweight and easy to paint or coat, but check for surface smoothness and edge comfort if working with small children or for intricate decoration.
- Durability and reuse: Some balls are hollow or have reinforced edges—these are better for frequent prop changes or classroom use. Solid designs resist dents and maintain shape longer.
- Shape options: Half spheres and domes enable creative centerpieces and floral arrangements. Nearly seamless painting and texturing are achievable on smooth surfaces.
- Ease of customization: Choose products with smooth surfaces and a compatible texture for your preferred paints, glues, and embellishments. Consider whether you need pin-ready surfaces for crafting.
- Color and finish: Most listed items are white; you may need primers or coating for vibrant colors. Plan for sealing to avoid moisture damage if used outdoors.
- Cost and quantity: For large projects, packs offer better value. Evaluate whether singles or bundles fit your project scale and storage capabilities.
- Storage and handling: Lighter balls are easier to move but may deform if stored improperly. Keep away from sharp objects to avoid punctures.