I used to think Jell-O jigglers were such a fun treat! I was thrilled when I found this more nutritious option. We cut some with cookie cutters and cut the rest into squares. You can use any fruit juice, as far as I know (even not 100% juice), so I'm looking forward to experimenting with more! We used plain ol' orange juice this time and they turned out great.
Recipe from Knox Gelatine
4 envelopes (1 box) Unflavored Knox Gelatine
1 cup cold fruit juice
3 cups fruit juice, heated to boiling
2 Tbsp. sugar or honey, optional
Sprinkle gelatin over cold juice in large bowl; let stand 1 minute. Add hot juice and stir until gelatin completely dissolves, about 5 minutes. Stir in sugar or honey if desired. Pour into 9x13 pan (I also think it would be fun to try them in candy molds!). Refrigerate until firm, about 3 hours. Store in refrigerator.