I always go to the used book sale and get like 30 $1 paperbacks then donate them to my unit book cart (inpatient psych) when I'm done reading them (also a paperback and cup of tea pair nicely with a good night shift).
If any of you would like you do this just remember only paperbacks and while it's not a hard no it's best to avoid obviously hardcore / explicit violent or sexual content (nothing the other patients are going to comment on them reading in the dayroom). Also most of my coworkers who would object to adult content don't really actually... read. At least not enough to censor content deeper than the cover.