For sale are snack sized ziplock baggies (6.5 x 3.25 inches) filled with home grown tropical live sphagnum. This is perfect to get a culture started. All it requires is bright light, pure water, and an occasional spritz of fertilizer to grow. Price is $10 a single bag plus $7 for shipping.
https://imgur.com/a/Xz8i1Af
https://imgur.com/a/Xz8i1Af