<<"What other hikes or activities did your granddaughter enjoy in the area?Did any other hikes seemed comparable to the Mannlichen hike?">>
In my opinion, that trail offers an exceptional and rare combination of easy walking, a moderate down hill altitude change, a relatively short trail, spectacular scenery, and most important for me ( especially as I am a serious travel/landscape photographer) a strong psychological effect due to the way the Eiger grows closer and towers over you as you walk toward it. Perhaps some of that is because i know a bit of history of the Eiger Nordwand ( North face of the Eiger.)
The Grütschalp-Mürren hike and the valley floor are nice, but don't have the same impact.
I've attached a photo from 2004 (film) of the Eiger in which hikess are barely visible due to the compression needed to post an image on this forum. I have also attached a grainy crop to highlight the hikers. A few moments with both files can give you some idea of how the Eiger dominates the view as you approach it.
There are other trails with special beauty or features all around Switzerland, and many in the BO region that have breathtaking scenery ( often literally- hiking up hill at 2300 meters makes me pause to catch my breath in the thin air).
What they don't have is easy access, and a playground at Männlichen for an 8 year old who can use it before the hike (delayed gratification is not a strong point of many 8 year olds). The playground can be watched from the restaurant. Combine that with a short easy walk ( nick-named "The Grannies' Walk") and a good trail with amazing views in various directions with some unusually good viewpoints of the Eiger.
Others do not agree with me, but I would only take that walk from Männlichen to Kleine Scheidegg. If you go the other way, it a quite nice hike (although slightly up hill) , but you have to stop and look behind you frequently to see the Eiger, and you miss the special feeling.
There are plenty of other trails in the rgion, and Grütschalp to Mürren might be an alternative for an 8 year old, but it does not have the feeling of being on top of the world.
Here is some good reading:
Lots of trail tips...Kim is a serious hiker, so you get some that are too difficult, as well as the easy ones.
Also, look at -
and scroll down the page.
Here are some other useful links-
www.swissholidayco.com /Public/Assets/User/fi les/Map-of-Jungfrauregion1.jpg
www.jungfrau.ch/en/som mer/tourism/destinatio ns/kleine-scheidegg/hiking-trails/
Use the tabs at the top, too.