How do I put my photos back onto my cameras SD card?

So I uploaded some photos of my cousins wedding to my MBP. Then, stupidly, I deleted them from my cameras memory card before getting print outs for family members. Is there a way I can put the photos back onto my cameras memory card so that I can take that to get print outs? If not, I suppose I can do the online order prints thing, but I’d rather just go and do it myself.
By the way, I think I could do it with a card reader (right?), but I don’t have one of those, so suggesting “use a card reader” won’t help me much.

Any suggestions?