His tags
You like buckys tags...okay you love them, the way they hung around buckys neck, the soft clashing of metal when they'd hit each other, the way they looked around buckys neck, he'd often catch you looking at them. It would make him smile, youd often catch yourself messing with them, you'd be laying on the couch or the bed, laying in his embrace, you would often reach up to fidget with them, it calmed you.
When you and bucky went out, or had to present to Valentina, you'd always subconsciously reach for buckys tags to mess with them. A motion that caught everyone's attention, but nobody minded, well Valentina would give the occasional eye roll, John would give a 'ugh' look at times but that was about it*
*youd often grab his tags and gently pull him towards you, into a kiss. which he of course enjoyed*
You just couldn't keep your hands off of his tags and he never once minded that.