For the super frugal, Ikea has packing cubes.
https://www.ikea.com/us/en/cat/travel-accessories-16255/
At $5 for a set of 3 and $4 for one two sided cube, they are also super light. I had to try them. They didn't seem that sturdy at first but Ive used them on two short trips and I'm hooked.
I use the medium for pants, sweaters and gym shorts. A smaller one for undies, socks and masks. The two sided one for shirts.
Not sure how long the'll last but at that price I could replace them yearly.
The actual ones I bought were:
The Rensare Clothes bags ($5 for a set of three)
https://www.ikea.com/us/en/p/rensare-clothes-bag-set-of-3-check-pattern-gray-black-10461208/
Rensare Clothes Bag with compartment ($4)
https://www.ikea.com/us/en/p/rensare-clothes-bag-with-compartment-check-pattern-white-50461206/
Rensare Accessory Bags (I use for electronics and misc items.) ($4 for a set of three)
https://www.ikea.com/us/en/p/rensare-accessory-bag-set-of-3-dotted-yellow-20461203/
Forfina 10 Piece Travel Set (toiletry bottles and kit) ($4)
https://www.ikea.com/us/en/p/foerfina-10-piece-travel-set-70367496/