I recommend that my consulting clients maintain an annual "community activity and charity budget."
When asked, if the event/activity is not something that you fully want to reach into your wallet for, the response is, "While I really think you have a great activity/event, we finalize our community event and charity budget in January and I am unable to make any adjustments mid-year without effecting my previous commitments. "I would really like to consider your activity or organization, but it would have to be for NEXT YEAR. Feel free to send my your contact information or the updated event information before January."
Most reasonable people or organizations understand...while many others will not. There is nothing worse that to feel like you are having your arm twisted without any way out.
UDS with Weber rotisserie, Blue Weber Performer with gas assist, Smoke Hollow elec. smoker, SJG mini-WSM, White thermapen, Blue-Backlight thermapen, Maverick ET-732 x 2, BernzOmatic JT-850 Weed Burner, BernzOmatic TS8000BZKC Hand Torch.