An oversize backplate prevents tear-through of the corrugated prepack display designed for extra presence prior to the Holiday. Most Gift Card displays seem to employ wide Butterfly or Loop Hook designs. Note that these do not seem to keep the cards level or neatly organized compared to other posts, but the true problem may be the die cut of the card.

For a Butterfly Hook Inventory Control Clip SEE…
Butterfly ICC Kaizen Is Multi-Use?

For other unusual corrugated posts SEE…
Corrugated Carrier in POP Re-Use and Multi-Use
Corrugated Hook Used on PowerWing Wire Grid
Corrugated Hook on Plastic Carrier
Corrugated Hook Used on a Curve
Corrugated Display Sports Slots
Corrugated Hook Used On Metal Display
Naked J-Hooks on Corrugated
Slatwall Hook on Corrugated Display
Slatwall Hook on Corrugated Redux
Wire-backed Corrugated Christmas Hook
Rectilinear Polygon Jewelry Hook for Corrugated
Hello Kitty Harbors a POP Secret
Hello Kitty Point-of-Purchase Explored
Rear-facing Hooks on Corrugated Display
Corrugated Magazine Case as Point-of-Purchase Prepack

For all Butterfly Hook topics SEE…
Metal Butterfly for Metal Perf” (This Post)
Card Wobble on Butterfly Hooks
Custom Implementation of Back Labeled Butterfly
Butterfly Hook Up-Close and Personal
Back Labeling Butterfly Hooks
Color Code on Butterfly Hook
Hybrid Grid Hook Now For Pegboard Too
Slide-in Butterfly Plastic Hook
Color-Coding Without Color Legend
Tea-Bag-Size Pouch as Back Tag
Butterfly Corrugated Hook Closeup
Removable Butterfly Hook Scan Arm
No-See-Em Butterfly Hook for Jewelry
Plastic Uniweb Butterfly Hook Display
Butterfly ICC Kaizen Is Multi-Use?

For a visual Pinterest Board summary see…
Hooks: Butterfly Display Hooks in Retail

SEARCH “Gift Card” to see a very broad range of fixturing for this purpose.