Hiding a lav mic underneath clothing can be tricky because clothing rubbing on the mic or cable can create noise. And different fabrics create more noise than others as does static and chest hair. I put all of my tools into a generic Home Depot parts box. It’s their in-house Husky brand with customizable compartments. The box works great for storing many different kinds of stickies used to adhere mics. I also keep fur to reduce wind noise, toupee tape and hypoallergenic medical tape if I need to attach the mic to skin. The “bullet” in the middle is to weight the cable when the lav is put down the front of shirts.