R.,
Welcome! Joanne told me that ya'll found the perfect home. I think you'll be really happy with Kyle - it's been growing like gangbusters, and there are lots of young families!
I have NO talent for interior design, so sorry I can't help you with the curtains. But, as far as fun stuff to do with your daughter - I'm your girl!
Last weekend was postponed due to rain, but this Saturday morning at 10:00, a parade kicks off Budafest, 2011. (I'm bummed that we'll miss it, this year.) It's the other big event there, besides the Wiener dog races. http://www.budafest.org/
My kids are both in school, now, but there are mom's groups in the area. Several of my friends were members of MOPS, that meets at Hays Hills Baptist (on FM1626, about a mile past 967). I also LOVE the mother's day out program, there - it's where I met Joanne!
In San Marcos (the next city, south on I-35), there is a place called Aquarena Springs. There are lots of natural springs in the area, and this one has glass-bottom boats you can go in, to see the springs in action.
We also have a few caves/caverns that are open for tours. Wonderworld in San Marcos, Innerspace in Georgetown (about an hour north of Kyle, on I-35), and Natural Bridge in New Braunfels (south of San Marcos - they also have a drive-through wildlife park, that's pretty cool).
In the summertime, you can go to a bridge on S. Congress in downtown Austin, and watch a colony of bats emerge to go feed for the night. (Mexican Freetails - they've flown south, for the winter.)
Olympia Hills Gymnastics (in Buda) has a Parent/Tot playtime on Monday mornings at 10:00. (They also have it on Wednesdays at the S. Austin location - I-35 & Slaughter.) Both my kids loved it, and I met several moms there. http://www.ohgaustin.com/index.php
Somebody mentioned The Jumpy Place. It's also lots of fun. I know the owners, and I think they've done a great job setting it up, so it's fun for the kids, but easy to sit back and keep an eye on them.
I know the Buda Library has pre-school story time, so I'm guessing Kyle probably does, too.
If you aren't totally opposed to hunting, Cabela's was always a fun day out for my kids. . . seeing all the mounts, feeding the fish in the koi pond, and watching the fish in the giant tanks get fed.
Have fun setting up the house, and if you have any questions, just holler!
M.