Planner pages being upside down - we offer to send a new planner (if it’s one we still have in stock)
Missing/wrong size crochet hooks in Spiin yarn bundles - we send replacements (they are small so can fall out the bag during production)
There’s a very old First Edition alphabet die set where some of the letters cut backwards. They should all be off the market now but the customer should have been advised of the fault when they purchased the set (we sold them all super cheap to retailers with this caveat years ago)