Wow, I'm really surpised at these requests. Now's the time to put them on the floor! They need a chance to use their muscles, to stretch, squirm and turn. If you don't have carpet throw down a thick soft quilt. Scatter a few toys around for them to reach for. Try to give them an interesting view (my kids liked being near our sliding glass door because of the movement in the trees outside, birds, etc.)
I had an excersaucer after the swing stage but only got about a month's use of it. Honestly they outgrow all the "gear" so fast I don't even think it's worth it in the end.
It's such a great stage, and so much fun to watch them develop into upright little people, enjoy it! Soon enough they will be mobile and then the real challenges begin :)