You could put your desired items in a perl module and then use -M command line option to include them. This would be explicit. It sounds like you're looking for something that's implicit?

Example: mystuff.pm

use strict;
use Data::Dumper;
use Scalar::Util;

1;
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test.pl

print Scalar::Util::reftype("foo");
print Dumper("this is some raw text");
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invocation:

~/src/perl$ perl -Mmystuff test.pl
$VAR1 = 'this is some raw text';
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