A long roll-up extension cable with two outlets to side.
SLx 90073PI 30Mtr 13A Heavy Duty Mains Extension Reel from Lawson HIS
Retractable Extension Leads and Cable Reels - Buy Online
Extendable Household Wolf Pack 10 Metres 3 x 1.5mm² Section Extension Cable Roll Up : Amazon.co.uk: Electronics & Photo
MSW Retractable Cable Reel Cord Roll-Up PRO-E 15 (15 m + 1,5 m, Intuitive Fastening of The Cable Length, Max Output, Rolled Out 2.300 W) : Amazon.co.uk: DIY & Tools
Best Ways to Wrap an Extension Cord for Storage | Apartment Therapy
How to Roll Up an Extension Cord: 4 Tangle-Free Methods - Bob Vila