As a DIY project, you might consider building a table that has folding legs for easy storage when not in use. One thing to think about however, when it comes to the application of folding table leg hinges, is to make sure that the table legs are tightly flush with the table top so that there is no gap. This should eliminate the wobbling factor that can happen when the legs are not flush enough to the bottom of the table.
Folding table leg hinges:
Folding table leg hinges pictured: Posi-Lock Folding Leg Bracket (pair)
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