Now revived, and using an iPhone 8 Plus:

My initial kit was thus:

• Canon 30D in excellent condition, £80
• EOS to M42 adaptor, £1.79
• 2GB Sandisk Extreme III CF card , £3
• Fujinon 55mm f/2.2 M42 lens, £15
• (latterly) Pentacon 29mm f/2.8 M42 lens, £9
• (probably only occasionally) Raynette 135mm f/2.8, £13