Having tools and not needing them is inherently better that needing them and not having them. Available in 4 different styles, (bottle opener, ice scraper, spanner wrench, and even steel guitar picks) brandishing one of these could go either way in regards to how you appear in your social circle. However, the bottle opener is definitely clutch.
All tools are the same size as a credit card and fit perfectly in a wallet for premium portability. On sale now for between $7-$10 a piece.