Use a placeholder in the 'Who' column
You don't have to put a real name anywhere on your koha sheet. Most of the refuges and services use a simple placeholder in the 'Who' column, like:
Cool boy 1
Cool boy 2
Cool girl 1
Cool girl 2
Anything that lets you tell one child apart from the next works. The First name and Surname columns are never shown to gifters, so you can add them there, though you don’t need to if you can tell by the details in the ‘Who’ column, who the gift is for. That’s what will be printed on the label along with their age, gender, and the team/group details (below).
Put the team or group in the 'Class/Group' column
Then, so you can allocate each box back to the right place, use the 'Class/Group' column for the team, house, or group each child is under.
That way, when the gifts come back to you, the 'Who' and 'Class/Group' together tell you exactly where each one needs to go — without a single real name on the sheet.
Why this works
The giving on Koha Tree is anonymous either way - gifters never see which child they've been matched with, and the child never knows who gave. The placeholder keeps that protection intact on your end too, so the tamariki in your service stay safe while still getting their koha.
Still stuck?
If you'd like a hand setting your sheet up this way, kōrero mai - get in touch and we'll help you get it sorted.

