Optimal would be for everyone to use something like Lightning network to be able to send those small amounts and not get lost due to fees.
And logistically, value of anything less than $5 would be eclipsed by the postage cost.
Maybe off a few $5 items...
Thanks
Perhaps tracking would be rendered unnecesary when talking 1-5$ objects, that would render the shipping to around 2$ I believe.
I never used LN I heard it's centralization and stayed far away but I still love the idea of it.