StarTech Thunderbolt 3 PCIe Expansion Chassis (TB31PCIEX16)... Click the "See full description" link below for more details.
StarTech.com Thunderbolt 3 to Thunderbolt 2 Adapter (Non-Reversible) - TB3 Laptop to TB2 (20Gbps) or TB1 (10Gbps) Devices / Displays - Black - Windows
Yechiry External Gpu Enclosure Fit for Thunderbolt 3, 4, USB 4.0, PCIE 16X Slot, Mini EGPU Enclosure, ATX 24Pin Connector, Graphics Card Dock with SFX Bracket
StarTech Thunderbolt 5 Dock, Dual 8K 60Hz, Triple 4K for Windows, Up to Dual 6K 60Hz for Mac - TB5 & USB4 Docking station with 120Gbps max transfer, 140W PD, 30W Phone, USB 10Gbps
OWC Thunderbolt 4 - Thunderbolt 3 - USB-C Cable
Cable Matters [Intel Certified] Braided 40Gbps Thunderbolt 4 Cable 0.5m Black, with 240W Charging Power Delivery and 8K Video - Fully Compatible with Thunderbolt 3, USB 4 for Apple MacBook Pro, iMac
MacBook Adapter 7 IN 2 USB C Hub for MacBook Pro/MacBook Air/M1/ M2, Mac USB C Multiport MacBook HDMI adapter with Thunderbolt 3 Port, 4K HDMI, 100W PD, 3 USB A/C 3.0, SD & Micro SD