I use to carry a Gregory Jade 62L pack (a lot of practical pouches/pockets that temped me to “stuff them”; carrying the very little extras to assuage my trail fears. (Bought at REI and was coached by an experienced backpacking personnel.) It’s also acquired loads of daypack specials, similar to https://cristianenfbo.blogzag.com/77945963/getting-my-best-backpacking-sleeping-pad-to-work