People can be very funky about becoming older!
Hell, it happens!
Just make it fun, do you have any Family Pixs that can be framed and given?
Do Ballons, no the real ballons that need to be blown up. Not The I got You The Aluminum types.
Hell, do BBQ out side, casual and have Guests bring many small gifts, fun yes to be sure.
Do not make a big spread as Will feel that you spent to much.
Hope it turns out Fantastic!