If you live in a home where painting walls isn't permitted, chalkboarding is still an option for you.

gammahydroxybutyric acid - 4-hydroxy-butanoic acid

Just another note: some people are apparently concerned that Muldertorture stories are plotless, but I think a lot of our stories are plotless, and I don't have much of a problem with that, although I do enjoy plotted stories with morals more.

the acicular foliage of coniferous trees