The NSPCC is attempting to reduce its reliance on regular givers by targeting younger cash donors in its latest press and TV campaign.
The fundraising initiative, which kicked off last week, includes "post-it" styled press inserts and press ads in a range of consumer magazines including TV Times, Now, Women and What's on TV?.
The notes appear unbranded at first but have a child's letter to Father Christmas that says: "Dear Santa. I just don't want to be hit anymore.
Please. Love Lillian." The back of the note asks for a one-off donation of £15 to help stop child abuse.
The campaign will be backed by TV ads that ask viewers to pledge £15.
The ads will be aired on Channel 5 as well as satellite and cable channels.
Elvira Meucci-Lyons, donor recruitment manger at NSPCC, said:"The dear Santa appeal concept is an eye-opening way of engaging potential donors to the plight of abused children."