Networking
TP-Link TL-WN725N 150Mbps Wireless N Nano USB Adapter
A wireless adapter barely larger than the USB plug itself, so it can live in a laptop port without being knocked.
€15
hoco HI43 Mobile Portable WiFi 6 4G LTE USB Router White
USB-powered portable 4G LTE modem that broadcasts a WiFi 6 network for several devices at once, drawing power from any USB-A port rather than a separate adapter.
€25