I postponed buying my brother and his girlfriend a (specific) Christmas gift because I wanted to check if they have already bought it. Then I forgot about it. When I remembered, the stores selling it had already closed for Christmas. At our gift exchange, they did not have a gift for us, but my mother included their names on a gift tag for a present she gave us.
No gift giving rules were established prior to Christmas. The lack of gifts was not discussed afterwards. The lack of gift exchange between us breaks with tradition.
I would still like to get them this specific gift that they previously expressed interest in. How long should I wait before giving this gift to avoid linking it with Christmas presents or lack thereof?
I think exchanging gifts at Christmas is silly, and am happy to give gifts whenever I find something I think someone would appreciate it (why wait for Christmas?) and feel generous.