Unidentified Frying Object $20.00 Inside Message Blank Inside Packages of Heartstrings® cards are shrink-wrapped and sold in sets of 10 cards with envelopes. The actual card size is 4 1/4" x 5 1/2". Unidentified Frying Object quantity Add to cart SKU: 149. Category: Humor. Related Products I Love You from the Bottom of My Heart $20.00 This Too Shall Pass $20.00 Home Home on the Range $20.00 Starve a Cold, Feed a Retreiver $20.00