We had an old fashioned crocheted covered Bouncinette

Both have easy to remove/put back on machine washable covers.......
I got one of these & an expensive one. I sold the expensive one at a garage sale for $10 as it was useless. Couldn't wash it, couldn't rock it properly on anything but tiles..hated it.

As for the old fashioned crocheted one...LOVED IT. I got mine at a baby shop for $30! Some shops to still sell them. The are more upright, come apart for storage, can clean the cover & bounce so easy. In all the expensive ones a little baby cant bounce themselves. Just movement makes the old style ones bounce.
(though I did have a swing with bells & whisltes that was good too).

One great tip I got, was pop a big noisy toy on a handle in the kitchen on the bottom draw & place bubs in the old fashioned bouncer & they can kick it so easy. We were able to enjoy many meals this way early on.