Along with blackout poetry, I've been trying my hand at collages since my sabbatical. That time away was a time of creative exploration, and it's been fun to see what I can come up with.
I have a stack of magazines, pamphlets, mailings, and catalogues on my home desk that I'll root through and see what I can do. There usually isn't a plan beforehand, I just look at pictures or words until something strikes me and I go from there.
These sorts of activities help keep me playful.