It may not look like much, a pile of scraps with paint. But these are invaluable to me actually getting anything done!
When I have lots of time/energy to do art I can paint & stamp bunches of papers & alter lots of photos. I keep all my scraps & stuff I couldn't use in other projects. I throw them into a few old cigar boxes, a large one for bigger papers, medium for mid size ones and small (you get the picture). I have these boxes open and sitting at the edge of my painting table. So then other times when I need a background for a pendant or a card or a bit of color for a collage but don't want to get out the paints and make something up, I reach for my own ready made papers. And it beats using pre-printed store bought papers.
Thinking ahead, being organized and not throwing any papers out helps me fit some art into my busy schedule.