One Bag

I once tightly rolled my dress shirt and dress pants into my dress shoes to save space. I knew I'd need to iron them before wearing them anyway, and it actually worked really well!

If I have extra shoes or sandals I'll strap them to the outside of the pack.

I also use a single compact fast-charging usb-c charger.

Toiletries can take up unnecessary space. I use a small bar of soap for both my body and hair instead of bringing shampoo. For shaving I ditch the handle and use a small tin of shave butter instead of a can of shaving cream.

Other than that, I just take less clothes than I think I'll need. I only take 2 t-shirts and a tank top when I go for backpacking trips. I just do laundry in the sink every couple days and it's great!