Princeton has a growing hub for collectors, and it’s not your typical card shop. Rum River Relics, owned by longtime online seller Ryan Holman, blends the charm of an antique mall with the energy of a modern collectibles store—creating one of the most unique hobby stops in central Minnesota.
Holman has spent years selling cards, coins, vintage clothing, records, action figures, and video games online. His first physical location was a small booth inside an antique shop in Princeton – that experiment worked. Fast‑forward eight months to this past June, and Rum River Relics expanded into their own retail space inside Riverside Plaza, giving Holman room to build something bigger than a traditional shop.
What sets Rum River Relics apart is its structure. Instead of operating as a single‑vendor store, Holman applied the antique mall model to his own space. The shop partners with multiple vendors who share a focus on vintage and collectible goods. That means you’ll find trading cards from several different sellers mixed in with other products such as video games, records, and action figures. It creates a treasure‑hunt feel—every corner has something different, and every vendor brings their own flavor.
One of the newest additions is a dedicated sports card vendor who recently leased a room inside the shop. They’ve already stocked the space with roughly 50,000 cards – spanning baseball, football, hockey, NBA, and WNBA. Rum River Relics also carries hobby essentials like penny sleeves and top loaders, along with a selection of singles and TCG. For TCG fans, they offer sealed Pokémon product and singles, with more mixed into vendor booths throughout the store.
Holman’s background in communications shows up everywhere—especially online. He posts frequent videos on social media highlighting new arrivals, vendor spotlights, and upcoming events. That community‑building mindset led to the creation of Rum River Collectfest, a series of events held right inside Riverside Plaza. The first shows featured around 20 dealers selling video games, records, trading cards, and more. The success of those events paved the way for their first trading‑card‑only Collectfest, which we toured and will be covering in a separate article later this week.
Rum River Relics isn’t just another shop—it’s a collaborative, vintage‑forward marketplace where collectors can explore multiple vendors under one roof. Whether you’re hunting for sports singles, digging through Pokémon binders, or flipping through crates of records, the shop offers a little bit of everything with a community‑first vibe.