What household record do you always lose when you actually need it?

I'm building Vekrin around a simple problem: the evidence connected to the things we own is usually scattered everywhere.

Receipts in email. Warranty information in a drawer. Product photos on a phone. Manuals somewhere else.

I'm curious: what household information do you personally struggle to find when you actually need it?

Receipts? Warranties? Insurance evidence? Bills? Manuals? Something else?

I'm using the answers to decide what Vekrin should prioritise next.