Brand new 1lb dumbbell (1 single unit)
Bought $9 on amazon for wrist exercise and one-weight workout but I got another one as a gift

https://www.amazon.com/gp/product/B00CV4YFYU/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

Pickup available on campus in EV