You can make a simple foam block by trimming foam you already have to the size you need. Here’s a safe, easy approach:

1. Gather: clean packaging foam or a larger craft foam sheet, ruler, pencil, cutting mat, serrated knife or sharp craft knife, and fine-grit sandpaper.
2. Mark: measure and outline the block on the foam.
3. Cut: use light, repeated passes (don’t force it). Keep the blade vertical and rotate the foam instead of bending the blade.
4. Refine: lightly sand edges for a clean finish. A bit of masking tape can steady cuts on crumbly foam.

For fresh flowers, consider using purpose-made wet floral foam instead of DIY blocks, as it’s designed to absorb water. You can shop a range online and check store pickup options.

It’s possible to source foam at no cost if you’re flexible:

• Reuse what you have: check shipping boxes from recent deliveries for clean packaging foam.
• Ask locally: businesses that receive frequent shipments (like offices or warehouses) may have foam they plan to recycle. Always request permission.
• Community reuse: neighborhood swap boards or craft clubs sometimes share leftover foam from projects.
• Schools and makerspaces: they may have offcuts from art or theater set builds.

Inspect found foam for cleanliness and odors, then cut it to size. For fresh flower arrangements, many people prefer new wet floral foam for water absorption. If you need new blocks quickly, you can order online at Walmart and choose pickup or delivery where available.

Fresh flowers arranged in wet floral foam often last several days, though longevity varies by flower type, room temperature, and care. To help extend vase life:

• Soak correctly: let the foam sink on its own in clean water; avoid forcing it down.
• Prep stems: recut stems at an angle and remove leaves below the foam line.
• Hydrate daily: top off the container so the foam stays moist.
• Placement: keep arrangements away from heat, direct sun, and ripening fruit.
• Refresh: if stems fade, recut or replace as needed.

Actual life span can range widely (for example, hardy greens may outlast delicate blooms). Proper care and cooler conditions generally help arrangements look fresher longer.

Choose based on your project and the materials you’re using:

• Wet floral foam: absorbs water to hydrate fresh flowers. Great for centerpieces and bouquets that need moisture. Soak before arranging and keep topped up.
• Dry craft foam: ideal for artificial flowers, model making, and general crafts. It’s lightweight, easy to carve, and works well with picks, skewers, or low-temp hot glue.

Also consider shape (bricks, rounds, cones, cubes), size (fit to your container), and density (denser foam holds detail or heavier items better). You can browse a wide selection online at Walmart and check local store availability by ZIP, plus use pickup or delivery where offered.

Good storage helps foam stay clean and usable:

• Keep it dry and cool: store away from sunlight, heat, and humidity to reduce warping or brittleness.
• Protect surfaces: place blocks in a bin or bag to prevent dents and dust. Don’t stack heavy items on top.
• Wet floral foam (unused): keep sealed in its original wrap. Only soak right before arranging.
• Pre-soaked foam: it’s generally best used the same day, as standing water can harbor bacteria.
• Save offcuts: small pieces are handy for minis or filling gaps in arrangements.
• Avoid solvents: store away from paints or adhesives that can degrade foam.

Label sizes and shapes so you can quickly grab what you need for your next project.