Dry ice is really easy to handle. If you don't swallow it, the main danger is letting it sublimate in an enclosed space as that'll fill said space with CO2, but we are very sensitive to CO2 levels (unlike CO or N2) so the danger is low there, just don't be a complete moron.
Seriously, dry ice sublimates so when you hold a block or pieces unless you actually grip the thing, the layer of sublimating CO2 protects your hand rather well. Use gloves or tools if you're going to move large amounts (e.g. dozens of blocks by hand, or pellets by the literal fistful) both to protect your hand and to avoid wasting your dry ice more than necessary.
But as far as "dangerous" things go, dry ice is really low on the scale.
The biggest danger is putting too much in a completely sealed and locked environment as the sublimation will cause significant expansion, increase in pressure, and therefore a possible explosion.
Seriously, dry ice sublimates so when you hold a block or pieces unless you actually grip the thing, the layer of sublimating CO2 protects your hand rather well. Use gloves or tools if you're going to move large amounts (e.g. dozens of blocks by hand, or pellets by the literal fistful) both to protect your hand and to avoid wasting your dry ice more than necessary.
But as far as "dangerous" things go, dry ice is really low on the scale.
The biggest danger is putting too much in a completely sealed and locked environment as the sublimation will cause significant expansion, increase in pressure, and therefore a possible explosion.