most washi tape swaps work by exchanging slightly used up rolls or even new rolls (e.g. your least like design from a set pack). but my friend introduced me to this type of swap wherein you just exchange one yard of your designs. doing swaps this way lets you keep your current collection and at the same time sampling out other people’s washi tape designs. you can just wrap your washi tape loot around anything you like (e.g. pens, drinking straws, popsicle sticks) during the swap.
for my first washi swap loot, i rolled them on paper straws cut to the width of the specific washi tape. i also did this to sample my own collection and stored them in a reclaimed glass jar. now i have these cute washi tape mini rolls. 
the alkimis 