Just do a Google search for "Collectibles Insurance". It's out there.
Other options. We have a 'personal articles' policy on my wife's engagement ring. You can probably get something similar, though you'd need an official appraisal. Also might be able to have it covered under standard homeowners' or renters' insurance, provided it's declared under the policy and the policy is big enough to cover the value. Ask your agent on that one. Generally speaking, insurance is a mechanism for transferring risk for large financial problems you can't cover on your own. Most smallish value items aren't worth the coverage ... even if it's a bunch of $200 action figures.
Losing a toy collection doesn't strike me as a problem that needs risk-transfer. They're mass-market retail 'collectibles', not real collectibles (like fine art, or archeological artifacts, or antique guns, or something). They're not irreplaceable or of historical or intrinsic value. You have no liability risk. They can't bankrupt you. Their disappearance wouldn't ruin your life -- or even really disrupt it (like losing your daily-driver car would). They're moderately expensive toys. I'd probably self-insure them ... meaning, absorb the risk of replacing them myself, if I were so inclined.
But, if you have enough of them, I guess it could be worth the cost.
SnakeDoc
