The smallest you say?
Ok.
We'll start with the Kubotas. T1870 lawn tractor. Steering positionable and the hood opens. Nicely detailed diesel under that hood and it's more tractor than I drive at work.
ZD28 ZTR (Zero Turn Radius). Front wheels "steer" and the engine cover opens to reveal a nicely detailed diesel.
BX22 Compact diesel 4x4 tractor with LA210 bucket loader and BT600 backhoe. EVERYTHING is positionable.
The hood opens too.
RTV900 Utility Vehicle. Most everything is positionable on this one too.
Steering, "hood", dump bed dumps, roof is removable.
All of them are top quality and can be found on eBay. That's where I got mine and expect to pay about $25 each. There's 2 compact excavators in the series which I haven't got yet. Basically, I can decide which of the two I want/need. I want the smallest of the two but can't figure out which that is.
There's also a 30 or 40 hp tractor in the series. Same price range.
I'll show you some of the Bobcats tomorrow.