You might think about sending kids out to photograph objects which are living and nonliving. Make certain to give the students a paper for keeping track of everything they have photographed. When they are completed, upload the pictures to the computer.
Either print the photos and allow each pair of students write an explanation for every photograph, or just display them onto a big screen and allow each child or pair of students explain to the class how their photograph exemplifies living or nonliving.
You may also define geometry concepts you want your students to find. For younger students, they could be looking for certain shapes such as squares, circles, rectangles, and triangles. Older students will be on the lookout for geometric concepts like intersecting lines, parallel lines, specific kinds of triangles, tessellations, congruent and similar shapes, etc..If you want to buy a digital camera for a travel photography then you can browse https://www.sj5000thai.com/.
All these things can be seen around the school and schoolyard. Once the photographs are taken, you might want the kids to create a miniature book with a photograph and explanation of every geometric idea.
Or perhaps you want to make a class collage and thus you would place the titles of the kinds of geometric concepts on a bulletin board and kids sort and hang their picture in the appropriate location.