High quality USB 3.1 Type C to HDMI adaptor with single USB port. Available with and without short connection cable (This one does NOT have the cable).
eBay
11 in 1 USB C HUB Type C to RJ45 4K 30Hz HDMI VGA Adapter SD TF USB 3.0 2.0 Docking PD 87W USB C Splitter for MacBook Pro Air
Aliexpress UK
Extend Laptop to 2 Monitors HDMI: HDMI splitter for two monitors extends the display of a Windows laptop to a TV, projector or monitor, using one HDMI alone up to 4K @ 60 Hz and two HDMI simultaneously up to 4K @ 30 Hz.
eBay
12-in-1 USB C Docking Station USB C HUB TYPE C to HDMI Adapter PD 100W VGA RJ45 3.5mm SD TF USB 3.0 Splitter for Laptop MacBook
Aliexpress UK
4 in 1 HDMI ADAPTER: USB C to Dual HDMI Adapter connects the devices with a USB-C interface port to two HDMI ports, a USB 3.0 port, a PD port. PLUG AND PLAY: This mulitport adapter don't require any software, drivers, or complicated installation process.
eBay
4-in-1 USB C Docking Station TYPE-C to HDMI Adapter USB C HUB USB 3.0 5G High Speed OTG Adapter Splitter For PC Laptop Macbook
Aliexpress UK
\nHDMI port: 4K 2K Resolution: Transmits high-definition audio and video from computer or tablet to HDMI display for streaming and gaming with resolution up to full aperture 4k(4096×2160)/2160p (4k) ultra HD.
eBay
11-in-1 USB C Docking Stations USB C HUB Type C to HDMI Adapter 4K USB 3.0 Splitter Adapter For Laptop Macbook PC Accessories
Aliexpress UK
【Directly Connected to the Phone】uni Type C to HDMI cable can easily connect your Android phone to an HDMI TV or projector. This way you can enjoy live events or your favorite shows on a larger screen.
eBay
3 IN 1 USB C Docking Station USB C HUB Type C to HDMI Adapter 40K30Hz Extension Cable USB 3.0 Converter for PC Laptop Macbook Pr
Aliexpress UK
opened just to check contents as the box was a bit squished.
eBay
USB C Hub 10Gbps Multiport Adapter with 4K HDMI USB C 3.2 Gen 2 Compatible with MacBook Pro/Air Chromebook Other USB C Laptops
Aliexpress UK
4 in 1 HDMI ADAPTER: USB C to Dual HDMI Adapter connects the devices with a USB-C interface port to two HDMI ports, a USB 3.0 port, a PD port. PLUG AND PLAY: This mulitport adapter don't require any software, drivers, or complicated installation process.
eBay
15 in 1 USB C Docking Station USB C Hub Type C Hub Dual HDMI Adapter USB 3.0 10Gbps Splitter 4K60Hz/RJ45 1000M/USB3.0/PD100W
Aliexpress UK
Side 2-2 (Output): HDMI Female. USB 3.1 Type-C Charging Port Adapter. Side 1 (Input): USB 3.1 Type C Male. Side 2-3 (Output): USB 3.0 Female. Compatible only with TYPE-C devices wired to USB 3. Cable: Triple Shielded.
eBay
USB 3.1 Type-C To HDMI-compatible 4K Adapter Thunderbolt USB C Hub Usb3.0 TF SD Reader Slot PD for MacBookPro Air USB C Splitter
Aliexpress UK