Credit card fun

Yes, fun is the right word. I went to my cc's website and ordered a card with a new design. Yes, it is a bit frivilous, but I think it will save me some headaches. Mr. Fix-it and I have ccs from the same company, but different accounts. He added me to his, but I still have my separate account that I hardly ever use. I guess the company noticed because when they sent me a new card, they also included a bonus. I will get a dollar credit each time I use the card in the next month up to a certain amount. So guess which card I'm using now? But I need to keep it separate from our joint card, hence the new design. So new design and $$, how can you beat that fun?