The lovely walk around back and down the front of Old Fort hill 5 minutes from Jasper town takes an hour, about the same time DWs take to look in the souvenir shops.
Kids of all ages love wading in Talbut Lake sand dunes about 20 minutes east of Jasper town. Nice for kayaks and canoes, too. Going east, when you are beside the very big Jasper Lake on the north side, watch for the smaller Talbot Lake on the right and turn into the paved parking. Great view of Roche Miette in the distance. It is possible to walk (scramble near the top) of Roche Miette but it takes a full day. Wonderful view all the way!