The Cue Sports Chalk Buddy + Toam V10 set fits neatly into your pocket and uses a magnet (on your chalk) to rest conveniently on your person! 
Only £27! SAVE £3 When buying the Chalk Buddy (£15) with Taom V10 (£15)  
The Chalk Buddy set includes a Credit Card sized piece of stainless steel (which also acts as a ball spot checker) 1x 20mm Strong Magnet,  1x 20mm Sticky Pad, 1x Taom V10 Chalk.
A video tutorial on how to use this product can be found here: https://vm.tiktok.com/ZGJC3Rhde/