Tyga -- I Got a New Shiny Object for My Birthday

Tyga got a big consolation prize for his birthday ... a $200k chain -- at least that's what the jeweler says.

Dave Bling and Will DaBoss -- not their government names -- tell us Kylie's ex went to their DWS Jewelry & Co. in L.A. Thursday and sealed the deal.

They say Tyga got 4 chains -- 2 in yellow gold and 2 in rose gold. Check out the white diamonds on the Last Kings chain in the form of handcuffs.

It's perplexing for sure ... Tyga owes money to everyone in town. A dancer got a judge to order the rapper to pay her the $25k he owes her, and his landlord's looking for a payday as well.