ideas please

as the weather begins to turn warm and sweet nuggie is growing bigger, i'm finding that i want to get out of the house more and more. sweet pea is becoming a better travel companion and she seems to really enjoy our little trips here and there... but i'm having a dilemma. what do we do that's fun but cheap. and by cheap, i really mean free.

we went to the park yesterday and then walked to las paletas for nuggie's first popsicle. she loved it by the way! but on our way out of the popsicle shop it started pouring on us :-(

so i need to some ideas of things to do with a little bitty baby that might be indoors or hot weather friendly. baby girl is pretty tickled just being pushed in her stroller right now, so i could use some ideas of places we can go and walk around. i thought about target, but i find it impossible to go in there and NOT to spend money. maybe we could walk at the mall? you can do lots of walking and not go into any actual stores i guess. i could really use some non-store related destinations. can you help??? any ideas???