Quoted:Sunscreen & hydration always, also take it easy with respect to altitude until adjusted. The following are in no particular order at all
A short drive from Colo Spgs, kid-friendly depending upon age
http://www.goldminetours.com/A no-brainer, but weather-dependent. Snow is unlikely now of course, but thunderstorms and hail are possibilities
https://coloradosprings.gov/pikes-peak-americas-mountainAnother no-brainer, but weather is less of an issue due to season and elevation
https://coloradosprings.gov/parks/page/garden-godsI have no idea about the Olympics museum, either before or after covid. They are leeches upon the taxpayers
BBQ is indeed lame here
But we have outstanding green chili (excuse the spelling) for breakfast burritos
https://kingschefdiner.com/ or
https://mtnshadowsrestaurant.com/If for nothing else, heading west on US24 from COS and over Wilkerson Pass leads to a great view of the >14000 ft peaks on continental divide, and from there are many possibilities. Depending on the age of the kiddos, consider heading to St Elmo to feed the chipmunks. Or maybe North on CO-9 over Hoosier Pass (stop to run the kiddos to exhaustion at >10000 ft) gets you into Breckenridge where there are plenty of non-ski-season activities.
Since rainfall has been decent so far, check out Zapata Falls which is very close to Great Sand Dunes NP. The hike is short, and if the water is flowing there is a great payoff - probably best to check facebook (boo, hiss) to see if the falls are still going, it will be a lame hike otherwise.
https://www.alamosa.org/things-to-do-in-alamosa/alamosa-scenic-wonders/389-zapata-fallsSand Dunes is an underappreciated National Park, and under smoke-free conditions provides an outstanding view of the Milky Way that is impossible in light-pollution areas. But be prepared, services are limited.
Rewinding in no particular order:
Under-appreciated, but in the middle of Colo Spgs there is Palmer Park. There are many moderate trails, and weather-dependent some great views. Kid-friendly with respect to difficulty and elevation, and right in the middle of civilization. I have found this park to be a good intermediate stop to help flat-landers adjust while also providing great pics from the middle of a city.
A few weeks ago my BIL & nephew were up here from San Antonio (both very capable), and it turned out that breakfast downtown plus a reasonable hike at Palmer Park suited them just fine. It would have been rude of me to take them on steep & high-elevation trail, and anyway the Manitou Incline is a PITA for access with shit views