At this budget the honest question is whether a hamper or a device leaves the better impression, and the answer depends on your workforce rather than on which is objectively nicer.
Hampers win where the culture is family-facing. A large dry-fruit box goes home, gets opened at the dinner table, and the gift becomes something the employee's family associates with your company. That is real goodwill, and it is why hampers dominate Indian corporate gifting despite being, item for item, less valuable than the electronics at the same price.
Devices win where the workforce is young, urban and unlikely to be feeding a household. A power bank or a speaker gets used long after a hamper is finished. If your median employee lives in a shared flat, the device is the better gift and they will tell you so.
Two cautions on electronics in bulk. Check how the warranty is administered before ordering forty units — a per-unit consumer warranty tied to a retail invoice is manageable for one gift and a real headache when several fail in month three, so keep the invoices. And prefer brands that publish a specification you can hold them to: on this page the speakers and power banks state output, battery capacity and charging protocols, which is the difference between a product and a picture.
One comparison note on the hampers: read the published weights rather than the photograph. Two boxes at the same price on this page differ by more than 200g of contents.