Goldie Hawn proved what an amazing grandparent she is on Friday with a heartwarming video alongside two of her grandchildren. The much-loved actress delighted fans with a clip for her charity MindUp from her stunning home in LA.MORE: Goldie Hawn's ex-husband Bill Hudson makes rare social media appearanceGoldie was joined by Kate Hudson's daughter, Rani, and her son, Oliver's little girl, Rio, as they played with slime in her palatial back yard. WATCH: Goldie Hawn's grandchildren - all the details The star could be seen stretching and rolling the colorful creation as she joked about it being a "brain".She animatedly chatted to the sweet pair who looked right at home with their beloved grandmother. MORE: Goldie Hawn 'thrilled' as she updates fans on wonderful newsMORE: Goldie Hawn and Kurt Russell's unusual punishment to Oliver Hudson revealedThe threesome appeared to be in the back yard of Goldie's sun-soaked home with beautiful flowers and greenery behind them.A post shared by Goldie Hawn (@goldiehawn)Goldie played with slime with her grandchildrenGoldie captioned the post: "The most fun day with my darling granddaughters Rio and Rani playing with our new @mindup slime. Thank you @sloomooinstitute for creating this special 'Slime for your Mind' in honor of #MindUP and #mentalhealthawarenessmonth and for giving 50% of the proceeds to MindUP to bring more mental fitness to children and educators around the world.