It depends on the feel and support you want. Here’s a quick guide:

• Polyester fiberfill: Soft, lofty, and easy to shape—great for decorative throw pillows and crafts. It’s lightweight and usually simple to spot clean when inside a cover.
• Shredded memory foam: Moldable and supportive, better for cushions and pillows you lean on. It can feel denser than fiberfill.
• Down-alternative inserts: Pre-stuffed forms that deliver a plush, full look with minimal effort.
• Upholstery foam sheets/rolls: Firm structure for seat cushions or bench pillows.

If you’re unsure, try a small bag of loose fill or a single insert to test the feel before committing to bulk.

You’ll see a few common terms used across the craft and sewing aisle:

• Polyester fiberfill (often shortened to “fiberfill” or “polyfill”): the fluffy loose stuffing used in pillows, toys, and crafts.
• Shredded memory foam: small foam pieces that provide moldable support for pillows and bean bags.
• Down alternative: a synthetic fill that mimics the loft of down inside pre-made inserts.
• Upholstery foam: solid foam sheets or rolls for cushions and structured pillows.
• Poly-pellets/weighting beads: small plastic pellets used to add heft to crafts and weighted projects.
• Pillow inserts/forms: pre-filled inner pillows that slip into decorative covers.

Budget-friendly choices usually start with simple materials and smart sizing:

• Polyester fiberfill: A single bag can go a long way, and buying larger bags or bulk boxes can lower the cost per ounce.
• Multipack pillow inserts: If you’re refreshing several pillows, multipacks can be a cost-effective, time-saving option.
• Shredded foam: Often sold by the pound; it offers durable support and can be fluffed over time.
• Plan your fill: Decide how firm you want the pillow, add stuffing gradually, and avoid overfilling to stretch materials further.

Comparing fill weights and counts across packages can help you choose the most economical option for your project size.

You’ll find pillow stuffing in the craft and sewing section online and in stores. To browse quickly:

• Online: Search terms like “polyester fiberfill,” “shredded memory foam,” “pillow inserts,” “upholstery foam,” or “poly-pellets.” Filter by weight (ounces/pounds) or size (insert dimensions).
• In-store: Check the Arts, Crafts & Sewing aisle for loose fiberfill, foam, pellets, and ready-made inserts.
• Convenience: Look for pickup and delivery options, and review product details and measurements to match your pillow covers.

If you’re new to crafting, starting with a single insert or a small bag of fiberfill can help you gauge the feel you prefer.

It varies by size and firmness. Here’s a simple approach:

• Loose fiberfill: Start with one bag based on your pillow size, then add gradually until it looks and feels right. Compress and fluff as you go to avoid overfilling.
• Shredded memory foam: Allow it to aerate and expand before stuffing, then add small handfuls to reach your preferred loft.
• Pillow inserts: Choose an insert that matches your cover’s dimensions for a tailored look; some makers prefer sizing up slightly for extra plumpness.
• Upholstery foam: Measure width × length × thickness and buy a sheet/roll that fits your dimensions.

When in doubt, purchasing a little extra can provide flexibility for final adjustments.