Try a circular table for your dining space! Much nicer than a rectangular shape for tablewide conversations amongst a large group... For a way to make your existing round table larger, we found a fine 60-inch round glass table top for $285.95 at http://diningroomdecor.tropicalhouseplants.net/round-glass-table-top/ You can keep it stored away, and bring it out for larger dinner parties.
Benchwright Rustic X-base Round Pine Wood Dining Table by SIGNAL HILLS by Signal Hills
@Overstock.com - Hamshire Round Dining Table 60 inch - Share a meal with family or friends as you gather around this round dining table. Made of reclaimed and acacia wood, this durable piece of furniture is handcrafted and has a distressed finish that imparts a rustic look to your dining room. http://www.overstock.com/Home-Garden/Hamshire-Round-Dining-Table-60-inch/7706959/product.html?CID=214117 $1,547.99
The French Countryside Pedestal Dining Table by Home Styles
The La Phillippe dining table is made with 80 year old recycled Douglas Fir hardwood sourced from Northern California. The beauty and natural color of the wood accentuate the tongue and groove construction showcased in this table. This beautiful reclaimed wood dining table is sure to stand out in your home and be admired by your guests. This table is available in white, gray and chestnut trims, allowing you to choose the right one for your decor and desired look in your dining area.