This morning I heard on the radio a reference to "clothing optional vacations", which apparently extend to clothing-optional travel (or maybe I misunderstood!?!?). This is called, among the relevant population, a [ne:kenʃən], which is spelled nacation or nakation. This is not new (see here), just new to me.
Staycation is a now very established blend and it's attested since at least 2003 (see wikipedia) and has spawned a day similar blends, like daycation. Interestingly, one variant is, according to Wikipedia:
More importantly, staycation was on Lake Superior State's list of banned words last year (see again wikipedia). Man, it feels good to use those!