Please choose the correct ending to complete the given sentence: Holidays and Traditions: [header] How to preserve snowflakes [title] Gather the necessary materials. [step] In order to preserve a snowflake, you will need a microscope slide with a coverslip, liquid superglue, a small paintbrush, a magnifying glass, and a dark cloth or piece of cardboard. You will also need a snowy day! [substeps] Microscope slides and coverslips can be purchased online.

Ending1: [title] Access the microscope slide with the cardboard and superslide covers. [step] Insert your microscope slide when you are ready. Ending2: The latter may be cheaper than an ordinary sturdy microscope slide. You can use a bright colored model of a snowflake to decorate. Ending3: The superglue must the liquid type. Gel superglue will not work for this. Ending4: You can also order snowflakes from craft stores, target stores or catalogs. Consider buying coats of real material such as denim or velvet.

Answer format: ending1/ending2/ending3/ending4