Motivated by the requirements of the Energy Harvesting Active Networked Tags (EnHANTs) that we have been developing, we focus on resource allocation policies for energy harvesting nodes. Due to the need for low complexity algorithms, we focus on simple policies, some of which were proposed in the past as heuristics. The policies aim to allocate resources uniformly in respect to time and to determine energy and data rate allocations for a node and for a link, under deterministic and stochastic environmental energy models. We analytically derive performance guarantees, and evaluate the performance via simulations (using real-world light energy traces) and in our EnHANTs prototypes testbed. The results demonstrate that in many cases simple policies perform well.