I only do overnighters or at most, 2-nighters, so I have
this guy that I carry on along with my Patagonia backpack that carries my work folder, laptop, iPad and headphones.
The bag has a bottom compartment that JUST fits my work boots. The top portion is more than big enough for a pair of pants, undergarments, shirts, sleep clothing and toiletry bag.
I've given thought to investing in carry-on "luggage" with the fancy rollers and hard shell...... but my current travel needs don't push me there quite yet.
That said...
just in case.