I think it's weird. It's an N64 pad. Supposedly anyway, it never really seemed to work very well.
I don't know if it's quite rare, but it's certainly the only one of its kind I've personally seen, and it doesn't seem to pop up much if you search for third party N64 pads.
I picked it up pre-owned with no packaging from a high street game store probably towards the end of the N64s lifetime. I think - I haven't tried using it in decades - it had some tilt sensors in the sort of gloved bit, but it was a nightmare to use.
Oh, i have a Phoenix Wright "Objection" stylus, which is basically a DS stylus with a PW finger on the end. It's also on a lanyard. Not sure how i forgot that to be honest. I have a whole display cabinet of weird gaming stuff.