I’m hoping the STW collective wizardry can come up with a suggestion here. My elderly MIL is in a care home and she keeps losing her hearing aids. They always reappear, usually stuffed down the side of the chair in which she spends the days. Last Tuesday the care home brought in some agency carers and now both hearing aids have disappeared for good; we think an agency carer must have taken them away by mistake. Caring for Grandma is now even more stressful because she can’t hear you unless you shout very loud.
How can I label a small plastic object about the size of a Brazil nut, clearly and indelibly? I though of buying a Rotring pen and hand-writing her name using India ink but is that indelible and will it resist soap, body lotion, sweat, humidity etc? Engraving would be good but might go through the plastic casing. I can print a small sticky label at work on a Dymo printer but the paper labels will get grubby and wear out and the adhesive will go soft.
Any suggestions?