Here is a set of 19 full size overlays for any Project 365. Each overlay is 3600x3600, in jpg format. You get 7 overlays with the days of the week and 12 with the months of the year. Each overlay is in greyscale, and has no texture, allowing you to add your own. Use the overlays to colorize them, or blend them over other solid or patterned papers. Use a section only, resize them, turn them negative to have grey on white instead of white on grey.
And you surely can use those overlays for other types of layout than Project 365. Maybe you want to document a trip, or an event. These would also be perfect.