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Construction party decorations: yellow and black palette with diggers, cones and banners. Checklist and a $70-160 budget.
Quick answer: A construction party uses yellow, black and kraft brown with diggers, cones and “Under Construction” signs. Build a yellow-and-black balloon garland, add traffic cones and a tool table. Budget $70–160 for 20 guests.
Key takeaways
You need six core items: a yellow-and-black balloon garland, traffic cones, digger or dump-truck cutouts, an “Under Construction” banner, matching tableware and a cake topper. Cardboard boxes stacked as “building blocks” add height for almost nothing.
Use yellow and black as the main pairing, with kraft brown for a work-site feel. Add a little orange or grey for realism. Yellow-and-black is the single clearest signal of the theme, so keep it dominant.
| Item | Quantity | Budget |
|---|---|---|
| Balloon garland (yellow + black) | 1 (80–100 balloons) | $25–40 |
| Traffic cones | 4–6 | $8–18 |
| Digger / truck cutouts | 3–5 | $10–25 |
| “Under Construction” banner | 1 | $8–15 |
| Tableware (plates, cups, napkins) | 2–3 per guest | $18–32 |
| Cake topper | 1 | $5–12 |
| Total | $74–142 |
Budget $70–160 for 20 guests, or about $3.50–8 per guest. It is one of the cheapest themes because traffic cones and cardboard boxes are inexpensive and do most of the visual work.
Serve food in kraft-brown boxes or clean toy dump trucks, labelled “builder’s breakfast” and “nuts and bolts” (pretzels and cereal). A plain cake with a digger topper and a few chocolate “rocks” looks fully themed.
Set up a cardboard box building station with tape and child-safe tools, or a “dig for treasure” sand tray. These double as decorations during the party and keep guests occupied without extra cost.
You need a yellow and black balloon garland, traffic cones, digger cutouts, an “Under Construction” banner, matching tableware and a cake topper. Stacked cardboard boxes and cones are the cheapest way to fill the space and reinforce the theme.
Yellow and black, with kraft brown and a little orange or grey. The yellow-and-black pairing is the clearest theme signal, so keep those two colours dominant and use the others as accents.
Plan on $70–160 for 20 guests, or $3.50–8 per person. Traffic cones and cardboard boxes cost very little and create most of the effect, making this one of the more affordable themes.
Shop the theme: browse our party themes and party supplies, or see how many balloons a garland needs.
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