Vintage Hew Snap electrical Tester, complete with instructions and case, has been in the cupboard a few years, not sure if working, but could be ok.
eBay
Compatible Mindray R3 R12 and EDAN SE-1/3/12/300B/301/601/601A ECG EKG cable 3.0DIN/4.0Banana/Snap/Clip/Animal Vet leadwire.
Aliexpress UK
This is a very nice analog tester that has not only the clamp function, but has probe options in the bottom of the unit and an ohm probe option in the side of it.
eBay
1.5mm din plug Holter ECG EKG 7 lead snap electrode cable and EEG EMG socket for Medilog/contec/GE/Biomedical/Biox holter ECG.
Aliexpress UK
304 U Bolts Heavy Duty Anti-Rust Mast to Mast Mount Bracket Kit for TV,CB,Ham Double Antenna Mast Clamp V Jaw Block with
Aliexpress UK
Test Stand PCB Clip 2.54mm Spacing Clamp Burning Fixture Probe Pogo Pin Download Program Burn 3P 4P 5P 6P 7P 8P 9P 10P 12P Cable
Aliexpress UK
1Pcs Connector BNC Male plug Clamp RG58 RG142 LMR195 RG400 Cable RF Adapter Coaxial High Quanlity 50ohm Brass
Aliexpress UK
Stainless Steel Mount Bracket L Mounting Bracket for LPDA Yagi Outdoor Antenna with U-Bolt, Mounting Screws, Mast Clamp
Aliexpress UK
1pcs N Male Plug Connector Clamp 1/2" Flexible Cable RF Coaxial Brass 50ohm Straight New
Aliexpress UK
Proskit 8PK-3002D Clamp Fiber Optic Stripper 8PK-3002D Cable Stripping Tool /Fiber Wire stripper
Aliexpress UK