I love the credit card-style multitools because I can keep one with me at all times without adding much of any noticeable bulk nor additoinal thing to take in and out of my pockets. If they're taken from me at the airport, no problem since it only cost about $1. The only problem was that it was sometimes challenging to get it to slide out of my card pocket. This tool keeps the multitool from sliding to the bottom, and allows you to easily retrieve it. The specific tool this is designed for is pretty ubiquitous, but here is the listing where I buy a bunch at once: https://amzn.to/3VAIPIU