You can use a bath lotion

Specification: Transparent Double Finger Stall

Packaging: color box

but the actual usable storage capacity may be lower

M (white + white + pink + skin)

Ear Endoscope, Luminous Visible Ear Scoop Color:White Set You can use a bathProduct information: Working frequency: 2. 4g Operating voltage: 3. 7V Maximum power: 0. 5W Tube shape: ABS Input interface: type c Input parameters: 5V 0. 3a Barrel color: black white Power supply type: polymer Battery life: 35 minutes Charging time: 60 minutes Working environment: 10 to 50 degrees Battery capacity: 130mAh Product specification: length 145mm Switch type: lamp cap press switch Working mode: Long press for two seconds to power on off