Just go ahead and DO !. . . we call them *creative sparks* here, that play with different art techniques and art medium just because you want to.
You can add them to your art stash to use at another time, perhaps for that future project. It's the process that really counts anyway.
I found this creative spark on the kitchen table this morning :
She used colored dye on tissues (you know, kleenex tissues!) and used only a three color palette.
Other times she has used paint, or sharpie markers, on paper towels.
It is art in its own right or can be incorporated into a mixed media piece.