Many key documents (power of attorney, in particular) require notarization, which can be a real barrier if leaving home is difficult — but there are more options today than most people realize.
Mobile notaries
Traveling notaries who come to your home for a fee, widely available in most areas and bookable online or through local directories.
Remote online notarization (RON)
A growing number of states allow notarization via live video call with a commissioned notary, using identity verification tools — check whether your state permits RON and whether it's accepted for the specific document you're signing.
In-home options through your bank
Some banks offer notary services and may be willing to send a banker to your home for existing customers with mobility limitations — worth a direct call to ask.