Talk and sing to her. Make eye contact when you speak, and use a really expressive voice. (Most mothers do this instinctively - heck, most PEOPLE do this naturally with babies! LOL)
Some time on tummy - again, interact with her there - and on back. Touching and tickling (not more than she can handle - and she'll let you know!). Lots of touches and textures - different fabrics, for example.
Carry her - bounce her. If her neck is strong enough (and this will improve as she has more tummy time), you can lay on your back and put her tummy-down on YOUR tummy and lift her up and down. Dance with her - bounce to the beat, turn around while holding her, tap your fingers on different parts of her body to the beat. Take her for walks and show her things, "narrate" what she sees, let her look and touch and hear and smell and taste whatever she can safely.
Bathtime/water play, indoors and out when possible - the feel of water is wonderful for babies and they begin to see different ways to interact with it on their own and from watching what you do.
Peekaboo is a good one too; babies of different ages will react to this differently as they mature and they see the world differently.
As little screen time as possible - NONE is the best amount of TV/tablet/phone at this age and will be for the first couple years. Real world whenever possible. Basically, ANYTHING that helps her connect with you and other people and her world counts - it doesn't have to be (and really isn't) "games" at this point in time.

Get to know your baby and let her get to know you!
Also, remember that you and she don't have to be full-on engaged every moment she's awake. She can be laying on the bed watching while you sort socks or some such, or sitting/laying nearby watching you eat breakfast or grab a drink of water; it's actually good for babies to have some "down time" as well.
A caution: whenever possible, let her initiate new things to do or learn from watching you. As a Music Together teacher I see parents all the time who are trying to "make" their babies keep a beat like the big kids when the babies are in fact watching and working out what to do, and the interruption keeps them from fully processing and starting things on their own.

Have fun!