Cardboard · Design Exploration Mockup — not live

Share your collection

A public, read-only page any collector can link from an Instagram bio, a forum signature, or a group chat. If a storefront is how a dealer sells, a showcase is how a collector shows off — the same idea, mirrored for the other half of the user base. Every shared page carries a subtle "Made with Cardboard" footer, so each share quietly points the next collector back to the app.

Why it's cheap to build

Same architecture as the dealer storefront: a column-whitelisted Postgres view feeds a Worker-rendered page behind an edge cache. No new backend, near-zero marginal cost per page. Cost and cost-basis are never in the whitelist, full stop — and beyond that, the collector decides whether any value shows at all.

Same data, three different front doors. Each one leads with something different — the total, the identity, or the trend line.

cardboard.app/s/dmorales
DM
Derek Morales
@dmorales_cards · Collector since 2016
Collection value
$18,430
142
cards
4
sports
Best card
Victor Wembanyama — 2023 Prizm RC · PSA 10
$1,800
Collection
Wembanyama
Victor Wembanyama
2023 Prizm RC
$1,800
Trout
Mike Trout
2011 Topps Update RC
$1,600
Ohtani
Shohei Ohtani
2018 Bowman Chrome Auto RC
$1,250
Mahomes
Patrick Mahomes
2017 Prizm RC
$980
Doncic
Luka Doncic
2018 Prizm RC
$890
Crosby
Sidney Crosby
2005 UD Young Guns RC
$720
Jokic
Nikola Jokic
2015 Prizm RC
$625
Bedard
Connor Bedard
2023 UD Young Guns RC
$340
Soto
Juan Soto
2018 Bowman Chrome RC
$340
View all 142 cards
Made with Cardboard
Trophy Case

For the collector whose collection is the flex — leads with the total and the grail card.

cardboard.app/s/priyacollects
PR
Priya Raman
@priyacollects

Rookie-card hunter. Basketball and hockey, mostly. Collecting since 2019.

Basketball Hockey Baseball
More from the collection
Ohtani
Shohei Ohtani
2018 Bowman Chrome Auto RC
$1,250
Mahomes
Patrick Mahomes
2017 Prizm RC
$980
Doncic
Luka Doncic
2018 Prizm RC
$890
Crosby
Sidney Crosby
2005 UD Young Guns RC
$720
Jokic
Nikola Jokic
2015 Prizm RC
$625
Tatum
Jayson Tatum
2017 Prizm RC
$410
View full collection · 96 cards
Made with Cardboard
Showcase

For the collector whose identity is the flex — leads with who they are, values optional.

cardboard.app/s/alicia-kwan
AK
Alicia Kwan
@alicia.cards
Portfolio value
$24,110 +12.4% · 90d
AprMayJunJul
Allocation by sport
Basketball42%
Baseball27%
Football18%
Hockey13%
Top movers · 30d
VW
Victor Wembanyama
2023 Prizm RC
▲ 18.2%
CB
Connor Bedard
2023 UD Young Guns RC
▲ 9.4%
JC
Ja'Marr Chase
2021 Prizm RC
▲ 6.7%
RA
Ronald Acuna Jr.
2018 Topps Chrome RC
▼ 4.1%
Collection
Ohtani
Shohei Ohtani
2018 Bowman Chrome Auto RC
$1,250
Mahomes
Patrick Mahomes
2017 Prizm RC
$980
Doncic
Luka Doncic
2018 Prizm RC
$890
Crosby
Sidney Crosby
2005 UD Young Guns RC
$720
Jokic
Nikola Jokic
2015 Prizm RC
$625
Tatum
Jayson Tatum
2017 Prizm RC
$410
View full collection · 118 cards
Made with Cardboard
Stats-forward

For the collector who thinks like an investor and wants the page to prove it.

Every showcase ships locked down. The collector opts in to each layer below — nothing here defaults to public.

Show total value
Displays the big number at the top of the page.
Show per-card values
Turn off to share the collection without prices.
What's shown
Curated set lets you hand-pick which cards appear — hide duplicates, low-value commons, or anything you'd rather keep private.
Whole collection
Curated set