Best Affordable Sci-Fi Props for Cosplay (Under $30)

Convention prop budgets range from "I found this in the recycling" to "I refinanced the house." This is a guide for the middle — props that look like deliberate, finished objects rather than cardboard tubes, without a significant financial commitment. Under $30.

The Expanse-Style Hand Terminal

The most complete entry here. The Sci-Fi Hand Terminal from VARØ Industries is a laser-cut acrylic communicator prop — the kind of personal device every character in a space-based sci-fi series seems to carry.

Dimensions: 4½" tall × 2 9/16" wide × 1/8" thick. Laser-etched detail on the front. It's a single flat piece, which is the right form factor for a personal communicator or data tablet — something that slides into a jacket pocket or clips to a belt. Hits the right scale for either hand-carry or holstered display.

It reads well as: Expanse hand terminal (obviously), Mass Effect omni-tool component, generic futuristic tablet, Star Trek-adjacent communicator.

Greeblie Packs for Detailing Any Prop

If you already have a base prop and want to add surface complexity, greeblie packs are the answer. The Laser Cut Greeblies pack from VARØ Industries — a mix of acrylic, wood, and cardboard offcuts — gives you raw material for adding industrial-looking surface details to any build.

Prime the base, sort the greeblies by size, glue them down in clusters, prime again, paint. This is how the original Star Wars model shop turned simple structures into convincing starships. See the full greeblie guide for the complete process.

Free Options Worth Knowing

Lightsaber Wall Mount: The New Janky Workshop released a free SVG file for a wall-mount display bracket for lightsabers or similar props — find the video here. If you have access to a laser cutter or know someone who does, it's a free project.

Foam and Cardboard Builds: EVA foam and cardboard remain the backbone of affordable prop making. They're not glamorous, but a well-primed, well-painted piece reads better from 3 feet away than an unfinished 3D print. The key is paint: grey primer, base color, dry-brush silver on edges, dark wash in recesses.

Making Plastic Look Like Metal

The two moves that transform a cheap prop:

1. Grey primer — spray everything first. Raw foam, raw plastic, and raw cardboard look exactly like what they are. Grey primer immediately adds seriousness.
2. Silver dry brush — load a stiff brush with silver or metallic paint, wipe most of it off on a paper towel, then drag it over edges and raised details. Simulates paint wear and makes surfaces read as metal.

These two techniques cost about $15 combined and will improve any prop.

Calibrating Expectations by Costume Type

Sci-fi costumes from shows with "lived-in" aesthetics (Expanse, Battlestar, Firefly) look better with worn, imperfect props. Anime mecha or clean-future sci-fi (Star Trek, Federation-era) benefit from cleaner, painted surfaces. Match your prop's finish level to what the source material looks like.