In my experience, guinea pigs don't really "play" very much...they like to explore, chew, and sleep.
The most important "toy" you can give your guinea pig is a same-sex buddy. You can bring her to a small animal rescue or humane society and introduce her to potential female friends in a neutral area. These instructions are helpful when it comes to bonding two guinea pigs:
https://www.cavyspirit.com/sociallife.htm.
You should also make sure that she (and any future friend) have plenty of space. Follow the guidelines on the homepage of this site:
www.guineapigcages.com. My guinea pigs truly became different pigs when I upgraded their cage to a 2x4. They love the space and they are so happy. If you aren't able to make your own C&C cage, you can order them online.
Make sure your guinea pig is getting an unlimited amount of fresh, soft, green hay such as Timothy or orchard grass. I prefer orchard grass. You can get high-quality hay at hay farms, feed shops, or online at (broken link removed). She should also be getting an 1/8 cup of Oxbow Cavy Cuisine Adult Guinea Pig Pellets (available at Petsmart and online) and one cup of fresh vegetables:
https://www.guineapigcages.com/foru...vy-Nutrition-Charts-amp-Poisonous-Plants-List.
I like to give my guinea pigs plenty of hiding houses to check out -- I have cuddle cups, tunnels, huts, and sleeping bags from various online businesses like (broken link removed) and
www.etsy.com/shop/Piggiepopshop and
https://www.guineapigmarket.com/hidey-houses. Mine love to run through use oatmeal tubes. You could put some hay in a brown paper bag and cut a few small holes in it and have her tear it apart to get to the hay. Some people give their guinea pigs willow balls or willow tunnels to chew on. I have given my guinea pigs these Oxbow carrot toys, which they seem to like: https://www.wag.com/smallanimal/p/oxbow-timothy-carrot-499932?site=CA&utm_source=Google&utm_medium=cpc_W&utm_term=OXB-043&utm_campaign=GooglePLA&CAWELAID=1424057741&utm_content=pla&ca_sku=OXB-043&ca_gpa=pla&ca_kw={keyword}.