Here is a PDF file of blank manuscript paper that can be printed out on laser printers etc. It has 12 staves on it.
– A4 12 staff blank manuscript

For larger space between staves, here is a PDF file with 10 staves.
– A4 10 staff blank manuscript

When more staves are required on a pages (e.g. for sketches etc.), here is an A4 sized page with 18 staves.
– A4 18 staff blank manuscript

For larger staves, here is another A4 sized PDF with 10 staves.
– A4 10 staff blank manuscript (larger staves)

Note: all of these blank manuscripts are free from clefs, barlines, branding etc. Nothing annoying to get in the way of writing music.